<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:eaeda9fa-bf7f-40e6-ae11-1fdc5a9850fb,g:fbc614ae-b334-44a1-aff8-ed87670a8b76-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.zoominfo.com/role/Coverpage" xlink:type="simple" xlink:href="zi-20200817.xsd#Coverpage"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/Coverpage" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_d3b6386b-f60c-4b52-a9a3-8e11ec853b4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_RestrictedCashCurrent_d3b6386b-f60c-4b52-a9a3-8e11ec853b4d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_2ef79420-57a4-454c-b364-c9d7cfc75a09" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_2ef79420-57a4-454c-b364-c9d7cfc75a09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_4d860451-fbdb-4fa4-80ab-02d556baf591" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_4d860451-fbdb-4fa4-80ab-02d556baf591" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCostsCurrent_f9f8e41f-bde8-4eb0-8e18-27464aa5945b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredCostsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_DeferredCostsCurrent_f9f8e41f-bde8-4eb0-8e18-27464aa5945b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_c3c7bbe0-b406-483e-8ce8-14afadb7c8d3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_IncomeTaxesReceivable_c3c7bbe0-b406-483e-8ce8-14afadb7c8d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_bd1bc5c3-b70a-49ae-be12-98e8460ca287" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_bd1bc5c3-b70a-49ae-be12-98e8460ca287" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableRelatedPartiesCurrent_bbcb3351-fd45-44cd-a233-767909c6c9b9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsReceivableRelatedPartiesCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3fd3a8c6-6767-43dc-90a0-8c9748090c14" xlink:to="loc_us-gaap_AccountsReceivableRelatedPartiesCurrent_bbcb3351-fd45-44cd-a233-767909c6c9b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_4f9678b5-1c16-4b55-ad0d-e8e03673ccd9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersCapital_58f3ae9b-0a32-41e8-abcb-895090493a05" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MembersCapital"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_4f9678b5-1c16-4b55-ad0d-e8e03673ccd9" xlink:to="loc_us-gaap_MembersCapital_58f3ae9b-0a32-41e8-abcb-895090493a05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_e9430ad7-9f6f-42e3-8642-c22948b07dbe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_4f9678b5-1c16-4b55-ad0d-e8e03673ccd9" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_e9430ad7-9f6f-42e3-8642-c22948b07dbe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_9d79b2e7-920d-4213-bda5-25b7ab0b8bb6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_9d79b2e7-920d-4213-bda5-25b7ab0b8bb6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_23f7d95b-496d-4710-bb7d-20e697268fc5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_LiabilitiesCurrent_23f7d95b-496d-4710-bb7d-20e697268fc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_659a853e-f595-4942-984c-38bf0b2c0882" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_659a853e-f595-4942-984c-38bf0b2c0882" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_f5a815d5-2616-4bba-ad47-ee182bbc4391" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_f5a815d5-2616-4bba-ad47-ee182bbc4391" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8cf6fc04-5e85-4b44-aee5-8dcb5607c683" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8cf6fc04-5e85-4b44-aee5-8dcb5607c683" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_6519dc79-9ca4-40bc-b541-7a79554b51a3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_6519dc79-9ca4-40bc-b541-7a79554b51a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_3b738949-e9a6-444e-898e-bfb84f336033" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7e193d23-76d4-408d-86f8-584baf6f608c" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_3b738949-e9a6-444e-898e-bfb84f336033" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCosts_1f407adf-1d4d-45c5-8b72-4c6cb2367407" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredCosts"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_DeferredCosts_1f407adf-1d4d-45c5-8b72-4c6cb2367407" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_dded0a7a-7a08-447b-bb4c-c99d3c5dca50" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_AssetsCurrent_dded0a7a-7a08-447b-bb4c-c99d3c5dca50" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_1816baae-5d21-43e9-8383-7615b760cace" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_1816baae-5d21-43e9-8383-7615b760cace" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_e7a053b3-d98a-423d-b49e-40a2a826e7d7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_Goodwill_e7a053b3-d98a-423d-b49e-40a2a826e7d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_b749151d-4085-4e43-bfcf-ce8f9009ab01" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_b749151d-4085-4e43-bfcf-ce8f9009ab01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_d4a062f1-7151-47c2-9e40-0b9fec514ad6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_d4a062f1-7151-47c2-9e40-0b9fec514ad6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_006abbe5-c075-4ddc-a13c-79d3b0ee056f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ac7ff22e-4849-4c99-8e87-035a98468122" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_006abbe5-c075-4ddc-a13c-79d3b0ee056f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_a71a9599-f9f9-49ee-8206-e077a14deef3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_8a7dc7ef-3759-47b9-8980-0eae307b0a96" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_a71a9599-f9f9-49ee-8206-e077a14deef3" xlink:to="loc_us-gaap_Liabilities_8a7dc7ef-3759-47b9-8980-0eae307b0a96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TemporaryEquityCarryingAmountAttributableToParent_ceea2403-a71b-40e2-a558-21cbc2094486" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_a71a9599-f9f9-49ee-8206-e077a14deef3" xlink:to="loc_us-gaap_TemporaryEquityCarryingAmountAttributableToParent_ceea2403-a71b-40e2-a558-21cbc2094486" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_2c0df381-ae2b-4ba8-84c8-683960f5c6e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_a71a9599-f9f9-49ee-8206-e077a14deef3" xlink:to="loc_us-gaap_CommitmentsAndContingencies_2c0df381-ae2b-4ba8-84c8-683960f5c6e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_ee408eba-9b21-4b6f-a4a2-75caedfe6b4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_a71a9599-f9f9-49ee-8206-e077a14deef3" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_ee408eba-9b21-4b6f-a4a2-75caedfe6b4d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersEquity_559eac03-78f7-45b6-a7ad-e8c48db4876c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MembersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7375dcce-bf2f-4f35-b435-5d584a824336" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_MembersEquity_559eac03-78f7-45b6-a7ad-e8c48db4876c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_7375dcce-bf2f-4f35-b435-5d584a824336" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MembersCapital_247f9145-b8be-4bf4-b2f6-880b57fd9370" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MembersCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_MembersEquity_559eac03-78f7-45b6-a7ad-e8c48db4876c" xlink:to="loc_us-gaap_MembersCapital_247f9145-b8be-4bf4-b2f6-880b57fd9370" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_8b9e83c8-deaa-4114-839f-95f021d5ce9e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_8b9e83c8-deaa-4114-839f-95f021d5ce9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_3962fff4-4b69-476b-bb05-95676da426fe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_LongTermDebtCurrent_3962fff4-4b69-476b-bb05-95676da426fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_2379263d-8137-4079-87fe-a4f3b47880e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_2379263d-8137-4079-87fe-a4f3b47880e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_fa42642d-3dfd-4075-a4dc-1fa4ba560d14" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_fa42642d-3dfd-4075-a4dc-1fa4ba560d14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_203e5ac0-2459-45fb-95f1-ad15593c637e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_203e5ac0-2459-45fb-95f1-ad15593c637e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_f3c65987-7e0c-4139-ba17-93b90fe33ebb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_AccountsPayableCurrent_f3c65987-7e0c-4139-ba17-93b90fe33ebb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrent_cb218f7a-32d6-460c-8713-f0f8fc03d04b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DueToRelatedPartiesCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_32fb0946-cca5-4a70-ba06-f41322707519" xlink:to="loc_us-gaap_DueToRelatedPartiesCurrent_cb218f7a-32d6-460c-8713-f0f8fc03d04b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedStatementsofOperations"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_22b06b1a-9c8b-4c34-ab7c-d695d9356835" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3aaaa63c-cb58-4f48-8218-cca7cd19f3c9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_22b06b1a-9c8b-4c34-ab7c-d695d9356835" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_3aaaa63c-cb58-4f48-8218-cca7cd19f3c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldAmortization_a2f25caf-4c1f-402d-8861-25d9ffb288ca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CostOfGoodsAndServicesSoldAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_22b06b1a-9c8b-4c34-ab7c-d695d9356835" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldAmortization_a2f25caf-4c1f-402d-8861-25d9ffb288ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_CostOfGoodsAndServiceIncludingDepreciationAndExcludingAmortization_1b5e4599-dd88-44a4-b163-e2991315fcd6" xlink:href="zi-20200817.xsd#zi_CostOfGoodsAndServiceIncludingDepreciationAndExcludingAmortization"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_22b06b1a-9c8b-4c34-ab7c-d695d9356835" xlink:to="loc_zi_CostOfGoodsAndServiceIncludingDepreciationAndExcludingAmortization_1b5e4599-dd88-44a4-b163-e2991315fcd6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_54bebda1-0d9b-4f97-b945-c9bf90f50a4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b1acd2d1-9f4f-40f8-bbfc-02a069634783" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_54bebda1-0d9b-4f97-b945-c9bf90f50a4c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b1acd2d1-9f4f-40f8-bbfc-02a069634783" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_4ed73949-4bbb-401e-9e07-256a978e3362" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_54bebda1-0d9b-4f97-b945-c9bf90f50a4c" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_4ed73949-4bbb-401e-9e07-256a978e3362" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_83d59fb7-a9b0-4d5c-89f3-bc3e67521341" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_18bc2383-448a-47ee-ae16-1f789a48688e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SellingAndMarketingExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_83d59fb7-a9b0-4d5c-89f3-bc3e67521341" xlink:to="loc_us-gaap_SellingAndMarketingExpense_18bc2383-448a-47ee-ae16-1f789a48688e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_ad9a853f-0274-48c7-bb45-c89cc1bcf9ae" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_83d59fb7-a9b0-4d5c-89f3-bc3e67521341" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_ad9a853f-0274-48c7-bb45-c89cc1bcf9ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_b4fa985d-b07c-4878-862e-5eccad382d7d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_83d59fb7-a9b0-4d5c-89f3-bc3e67521341" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_b4fa985d-b07c-4878-862e-5eccad382d7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_AmortizationOfOtherIntangibleAssets_f1c55ae5-4969-4649-9bf1-b8793e538892" xlink:href="zi-20200817.xsd#zi_AmortizationOfOtherIntangibleAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_83d59fb7-a9b0-4d5c-89f3-bc3e67521341" xlink:to="loc_zi_AmortizationOfOtherIntangibleAssets_f1c55ae5-4969-4649-9bf1-b8793e538892" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_780e3a17-a143-4267-acbc-39a068d088c1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_83d59fb7-a9b0-4d5c-89f3-bc3e67521341" xlink:to="loc_us-gaap_RestructuringCharges_780e3a17-a143-4267-acbc-39a068d088c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_cd4fa599-0932-4511-882e-613e020c6d0c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_3669c7dc-9d9f-45e8-928c-ff96959c3ad4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_cd4fa599-0932-4511-882e-613e020c6d0c" xlink:to="loc_us-gaap_GrossProfit_3669c7dc-9d9f-45e8-928c-ff96959c3ad4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_28b5f13e-99cd-4db7-9d99-559a5cdd9de1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_cd4fa599-0932-4511-882e-613e020c6d0c" xlink:to="loc_us-gaap_OperatingExpenses_28b5f13e-99cd-4db7-9d99-559a5cdd9de1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_67e57ff9-95dd-4b6a-83de-e86e6fd8f06e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_a1331298-6c82-4843-a5c1-7f5f53822937" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_67e57ff9-95dd-4b6a-83de-e86e6fd8f06e" xlink:to="loc_us-gaap_OperatingIncomeLoss_a1331298-6c82-4843-a5c1-7f5f53822937" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_b34ab0af-8979-4086-a9e8-4a6c163c5582" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_67e57ff9-95dd-4b6a-83de-e86e6fd8f06e" xlink:to="loc_us-gaap_InterestExpense_b34ab0af-8979-4086-a9e8-4a6c163c5582" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_bab533e1-9b28-4b18-a4e5-f117d9142631" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_67e57ff9-95dd-4b6a-83de-e86e6fd8f06e" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost_bab533e1-9b28-4b18-a4e5-f117d9142631" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_e6e17b7c-4256-4d66-98c6-e96790336427" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_67e57ff9-95dd-4b6a-83de-e86e6fd8f06e" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_e6e17b7c-4256-4d66-98c6-e96790336427" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_5ff04728-d1aa-42de-a93d-69cfcceaa77e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_f745c339-3dc1-4872-aaf3-9850b9d33290" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_5ff04728-d1aa-42de-a93d-69cfcceaa77e" xlink:to="loc_us-gaap_ProfitLoss_f745c339-3dc1-4872-aaf3-9850b9d33290" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_NetIncomeLossAttributableToParentPriorToReorganization_c25c1915-1593-4bb7-be92-e2b0d502320f" xlink:href="zi-20200817.xsd#zi_NetIncomeLossAttributableToParentPriorToReorganization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_5ff04728-d1aa-42de-a93d-69cfcceaa77e" xlink:to="loc_zi_NetIncomeLossAttributableToParentPriorToReorganization_c25c1915-1593-4bb7-be92-e2b0d502320f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2e5279b3-4d6f-4988-a57c-d2f28adf86b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_5ff04728-d1aa-42de-a93d-69cfcceaa77e" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2e5279b3-4d6f-4988-a57c-d2f28adf86b4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofOperationsParenthetical" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedStatementsofOperationsParenthetical"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedStatementsofOperationsParenthetical" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofComprehensiveLoss" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedStatementsofComprehensiveLoss"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedStatementsofComprehensiveLoss" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_8cc3eaf1-ac3f-45c3-a3d0-fd76a14b20cb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_2e416a68-849b-4db3-915a-4786600299fe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_8cc3eaf1-ac3f-45c3-a3d0-fd76a14b20cb" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_2e416a68-849b-4db3-915a-4786600299fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_249c0d9e-1a2b-4d06-9861-95e45d6ee298" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_8cc3eaf1-ac3f-45c3-a3d0-fd76a14b20cb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_249c0d9e-1a2b-4d06-9861-95e45d6ee298" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentPriorToReorganization_57ab3fd1-df2e-456a-9402-50870a6b713c" xlink:href="zi-20200817.xsd#zi_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentPriorToReorganization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_8cc3eaf1-ac3f-45c3-a3d0-fd76a14b20cb" xlink:to="loc_zi_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentPriorToReorganization_57ab3fd1-df2e-456a-9402-50870a6b713c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_0159ae48-abe7-41c9-a3d7-f005719478c4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_OtherComprehensiveIncomeLossCashFlowHedgeAmortizationOfDeferredLossesBeforeTax_7a486dba-2a28-448a-9607-6301f8be9f55" xlink:href="zi-20200817.xsd#zi_OtherComprehensiveIncomeLossCashFlowHedgeAmortizationOfDeferredLossesBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_0159ae48-abe7-41c9-a3d7-f005719478c4" xlink:to="loc_zi_OtherComprehensiveIncomeLossCashFlowHedgeAmortizationOfDeferredLossesBeforeTax_7a486dba-2a28-448a-9607-6301f8be9f55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_11904b09-39ad-4d74-bcac-9e83e6a3383c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_0159ae48-abe7-41c9-a3d7-f005719478c4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_11904b09-39ad-4d74-bcac-9e83e6a3383c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_OtherComprehensiveIncomeLossCashFlowHedgeRealizedGainLossOnSettlementAfterReclassificationAndTax_6869a320-fa53-4f87-8196-e9ecd9b20329" xlink:href="zi-20200817.xsd#zi_OtherComprehensiveIncomeLossCashFlowHedgeRealizedGainLossOnSettlementAfterReclassificationAndTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_0159ae48-abe7-41c9-a3d7-f005719478c4" xlink:to="loc_zi_OtherComprehensiveIncomeLossCashFlowHedgeRealizedGainLossOnSettlementAfterReclassificationAndTax_6869a320-fa53-4f87-8196-e9ecd9b20329" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_1790b823-287f-4bee-9247-6dd2ce152c6f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_b7d66b4f-fd45-4b8f-b9e7-663e0280d9a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_1790b823-287f-4bee-9247-6dd2ce152c6f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_b7d66b4f-fd45-4b8f-b9e7-663e0280d9a7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_3706236f-826b-4658-9409-61dd6470960b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_1790b823-287f-4bee-9247-6dd2ce152c6f" xlink:to="loc_us-gaap_ProfitLoss_3706236f-826b-4658-9409-61dd6470960b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofChangesinMembersDeficit" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedStatementsofChangesinMembersDeficit"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedStatementsofChangesinMembersDeficit" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="zi-20200817.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f1d40ede-59ff-47cd-86c5-0f06c995f43d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_6fb7bb3a-e6e8-40a4-9c2c-997a0f764423" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f1d40ede-59ff-47cd-86c5-0f06c995f43d" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_6fb7bb3a-e6e8-40a4-9c2c-997a0f764423" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_92d8512e-792c-4bd1-868f-c06569a04be2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f1d40ede-59ff-47cd-86c5-0f06c995f43d" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_92d8512e-792c-4bd1-868f-c06569a04be2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_58681242-449e-42b1-b934-9ebfefa8c7d9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_b6ec6e1a-0e28-4470-8e9f-308c6b8d71c3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_58681242-449e-42b1-b934-9ebfefa8c7d9" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_b6ec6e1a-0e28-4470-8e9f-308c6b8d71c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_c6081b20-65b7-4224-ba9b-53f89a996bae" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_58681242-449e-42b1-b934-9ebfefa8c7d9" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_c6081b20-65b7-4224-ba9b-53f89a996bae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2e3e7498-2d56-47c9-ab06-5ca85a922548" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_58681242-449e-42b1-b934-9ebfefa8c7d9" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2e3e7498-2d56-47c9-ab06-5ca85a922548" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_bedc2041-4f35-4d0f-913d-8a705acc10c2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_ProfitLoss_bedc2041-4f35-4d0f-913d-8a705acc10c2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDepreciationAndAmortization_eb93e29a-8718-4c81-815d-5c8af775fc44" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherDepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_OtherDepreciationAndAmortization_eb93e29a-8718-4c81-815d-5c8af775fc44" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_db621c38-7e86-43b6-938c-0c6a8f7a5c7d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_db621c38-7e86-43b6-938c-0c6a8f7a5c7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDeferredSalesCommissions_7ce5671e-6dcd-4745-b24a-e96666f00c7d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AmortizationOfDeferredSalesCommissions"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_AmortizationOfDeferredSalesCommissions_7ce5671e-6dcd-4745-b24a-e96666f00c7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_92b88349-504a-4b9b-bb54-613b48a826b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_92b88349-504a-4b9b-bb54-613b48a826b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_088d46f4-79cb-48d6-ba11-5b4034c7180f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_088d46f4-79cb-48d6-ba11-5b4034c7180f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_5155a315-5647-474b-a827-4032d20d4b85" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_ShareBasedCompensation_5155a315-5647-474b-a827-4032d20d4b85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_a6cec04d-4e7e-4599-a9d3-5ddaa579005a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_a6cec04d-4e7e-4599-a9d3-5ddaa579005a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_93b2dd56-dfe8-4b1f-b670-f7ecc1d57808" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_93b2dd56-dfe8-4b1f-b670-f7ecc1d57808" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_0d9b58ce-3d33-4f5f-8ffe-a16ad6b43514" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_0d9b58ce-3d33-4f5f-8ffe-a16ad6b43514" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_IncreaseDecreaseInPrepaidExpenseAndOtherAssetsCurrent_7851cd81-2c82-4aca-8be8-f937d1556af8" xlink:href="zi-20200817.xsd#zi_IncreaseDecreaseInPrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_zi_IncreaseDecreaseInPrepaidExpenseAndOtherAssetsCurrent_7851cd81-2c82-4aca-8be8-f937d1556af8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredCharges_29768cd2-8d7f-4fd8-9531-24c3025f9910" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredCharges"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredCharges_29768cd2-8d7f-4fd8-9531-24c3025f9910" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_2278b2b7-a76c-4208-9fa0-5ed0420d103f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInIncomeTaxesReceivable"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_2278b2b7-a76c-4208-9fa0-5ed0420d103f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent_b5061eb3-10b0-4499-a396-afd603b88c82" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent_b5061eb3-10b0-4499-a396-afd603b88c82" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_e3d02883-39b8-41cd-a423-718903cf2de7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_e3d02883-39b8-41cd-a423-718903cf2de7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_d68b2daf-0c53-4462-81b8-7ac107940d13" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_d68b2daf-0c53-4462-81b8-7ac107940d13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_c3729a62-c09f-4488-b27d-7272ff5af452" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_c3729a62-c09f-4488-b27d-7272ff5af452" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_0864178a-767c-4a38-9868-fb7c25cb9af4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_AssetImpairmentCharges_0864178a-767c-4a38-9868-fb7c25cb9af4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaidInKindInterest_bbc0bc3a-cf14-4cc3-bb4c-00479ac32390" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaidInKindInterest"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_78f0e129-a0ff-41fd-b77e-1f90d5747ab8" xlink:to="loc_us-gaap_PaidInKindInterest_bbc0bc3a-cf14-4cc3-bb4c-00479ac32390" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_8ad76783-25fd-4521-b911-78716613a72c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_8ad76783-25fd-4521-b911-78716613a72c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_89c6cd3f-a6d6-4765-a043-4bbb3d21b334" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSecuredDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_89c6cd3f-a6d6-4765-a043-4bbb3d21b334" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_0fbea1b5-6c49-4049-ba70-7dbee4620329" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_0fbea1b5-6c49-4049-ba70-7dbee4620329" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfOtherEquity_e02f7284-46c2-4331-af30-9e55c0ca2cef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRepurchaseOfOtherEquity"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfOtherEquity_e02f7284-46c2-4331-af30-9e55c0ca2cef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromOtherEquity_bcd185a7-8a39-404a-994a-22c3ffaabd6b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromOtherEquity"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_ProceedsFromOtherEquity_bcd185a7-8a39-404a-994a-22c3ffaabd6b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_4b8eebdb-5199-41ae-837a-58db16f3cc5b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_4b8eebdb-5199-41ae-837a-58db16f3cc5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfCapitalDistribution_7bcb6d63-36c0-4f98-8820-e8425ab13a10" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfCapitalDistribution"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_PaymentsOfCapitalDistribution_7bcb6d63-36c0-4f98-8820-e8425ab13a10" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_08a5637b-3e45-4853-bb5c-a785b01b7419" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_08a5637b-3e45-4853-bb5c-a785b01b7419" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_7fd9d1b4-ac49-438a-b78a-c0a917fa490b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_7fd9d1b4-ac49-438a-b78a-c0a917fa490b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceInitialPublicOffering_0d67eb04-cc7f-4a85-ae6f-10cc46d759ff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceInitialPublicOffering"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_ProceedsFromIssuanceInitialPublicOffering_0d67eb04-cc7f-4a85-ae6f-10cc46d759ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_e65116ff-fe6c-454a-93d0-ce4f133607e6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_7a36f4d3-0c17-4ce0-b029-9f5f947bff2f" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_e65116ff-fe6c-454a-93d0-ce4f133607e6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/OrganizationandBackground" xlink:type="simple" xlink:href="zi-20200817.xsd#OrganizationandBackground"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/OrganizationandBackground" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/OrganizationandBackgroundDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#OrganizationandBackgroundDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/OrganizationandBackgroundDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies" xlink:type="simple" xlink:href="zi-20200817.xsd#BasisofPresentationandSummaryofSignificantAccountingPolicies"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="zi-20200817.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesTables" xlink:type="simple" xlink:href="zi-20200817.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDisaggregationofRevenuebyGeographicAreaDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesDisaggregationofRevenuebyGeographicAreaDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDisaggregationofRevenuebyGeographicAreaDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesAccruedExpensesandOtherCurrentLiabilitiesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesAccruedExpensesandOtherCurrentLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesAccruedExpensesandOtherCurrentLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_926f8a11-36d5-4a4f-88d6-e130e9a9f6a7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_AccruedSalariesWagesAndBenefitsCurrent_3ce3f050-4447-4e8b-b3a4-28a0f0ee8323" xlink:href="zi-20200817.xsd#zi_AccruedSalariesWagesAndBenefitsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_926f8a11-36d5-4a4f-88d6-e130e9a9f6a7" xlink:to="loc_zi_AccruedSalariesWagesAndBenefitsCurrent_3ce3f050-4447-4e8b-b3a4-28a0f0ee8323" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_a25914e2-0d8a-468e-b23f-422a797e59f0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_926f8a11-36d5-4a4f-88d6-e130e9a9f6a7" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_a25914e2-0d8a-468e-b23f-422a797e59f0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomers" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomers"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomers" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersTables" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomersTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomersTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRevenueDisaggregatedbyServiceOfferingDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomersRevenueDisaggregatedbyServiceOfferingDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRevenueDisaggregatedbyServiceOfferingDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomersNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomersNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersNarrativeDetails_1" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomersNarrativeDetails_1"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomersNarrativeDetails_1" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails_1" xlink:type="simple" xlink:href="zi-20200817.xsd#RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails_1"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails_1" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinations" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinations"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinations" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsTables" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsAcquisitionDateFairValueofConsiderationTransferredDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsAcquisitionDateFairValueofConsiderationTransferredDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsAcquisitionDateFairValueofConsiderationTransferredDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsFairValuesofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsFairValuesofAssetsAcquiredandLiabilitiesAssumedDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsFairValuesofAssetsAcquiredandLiabilitiesAssumedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_708b1267-228f-4b9f-986f-17618ce68ee8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_708b1267-228f-4b9f-986f-17618ce68ee8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_cdf6c399-1341-473a-82a0-4c5890928520" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue_cdf6c399-1341-473a-82a0-4c5890928520" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_81d9ae31-6cb9-4a8d-a6d4-f91818bfeb6e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_81d9ae31-6cb9-4a8d-a6d4-f91818bfeb6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_05262094-345d-4b0a-9698-1b461bd06a41" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_05262094-345d-4b0a-9698-1b461bd06a41" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_20122c08-cc2d-4d53-aa3e-1943144c6a58" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_20122c08-cc2d-4d53-aa3e-1943144c6a58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_b02507c7-706e-4b19-8bff-b9c3fe28120b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_b02507c7-706e-4b19-8bff-b9c3fe28120b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets_a990e0b0-68f2-495f-a09e-c3acd23129b3" xlink:href="zi-20200817.xsd#zi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_zi_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets_a990e0b0-68f2-495f-a09e-c3acd23129b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_f59b1a3e-95e6-4850-977e-0932de83d733" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_f59b1a3e-95e6-4850-977e-0932de83d733" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_6cc581ea-02bb-47f8-a44e-f86337dbeeaf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_6cc581ea-02bb-47f8-a44e-f86337dbeeaf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation_ffe66c94-6d21-4d87-a1c6-bcb021e98eb2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation_ffe66c94-6d21-4d87-a1c6-bcb021e98eb2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_b7d5cd93-eabb-42dd-8487-6abf044c39d5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_dc83cab1-720d-428b-bd41-36e3906cf069" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_b7d5cd93-eabb-42dd-8487-6abf044c39d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_10f08b01-eb29-4669-9a4b-1b9ca51ee448" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_69e9b5f7-baed-4537-92f6-0658ad1bf29e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_10f08b01-eb29-4669-9a4b-1b9ca51ee448" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_69e9b5f7-baed-4537-92f6-0658ad1bf29e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_500ed0d3-5760-428c-8f88-f8a1a22910aa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_10f08b01-eb29-4669-9a4b-1b9ca51ee448" xlink:to="loc_us-gaap_Goodwill_500ed0d3-5760-428c-8f88-f8a1a22910aa" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsComponentsofIndefiniteLivedIntangibleAssetsAcquiredDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsComponentsofIndefiniteLivedIntangibleAssetsAcquiredDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsComponentsofIndefiniteLivedIntangibleAssetsAcquiredDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsComponentsofFiniteLivedIntangibleAssetsAcquiredDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsComponentsofFiniteLivedIntangibleAssetsAcquiredDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsComponentsofFiniteLivedIntangibleAssetsAcquiredDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/BusinessCombinationsProFormaRevenueandEarningsofAcquisitionDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#BusinessCombinationsProFormaRevenueandEarningsofAcquisitionDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/BusinessCombinationsProFormaRevenueandEarningsofAcquisitionDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/PropertyandEquipment" xlink:type="simple" xlink:href="zi-20200817.xsd#PropertyandEquipment"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/PropertyandEquipment" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/PropertyandEquipmentTables" xlink:type="simple" xlink:href="zi-20200817.xsd#PropertyandEquipmentTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/PropertyandEquipmentTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/PropertyandEquipmentDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#PropertyandEquipmentDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/PropertyandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_8a4e4506-1901-4285-bcca-e6f1988f61b0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_3d0924e2-a47a-4a46-b187-788be083fe80" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_8a4e4506-1901-4285-bcca-e6f1988f61b0" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_3d0924e2-a47a-4a46-b187-788be083fe80" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_4e5b5399-5858-43a2-ab18-359ee4c24f4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_8a4e4506-1901-4285-bcca-e6f1988f61b0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_4e5b5399-5858-43a2-ab18-359ee4c24f4d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssets" xlink:type="simple" xlink:href="zi-20200817.xsd#GoodwillandAcquiredIntangibleAssets"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssets" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsTables" xlink:type="simple" xlink:href="zi-20200817.xsd#GoodwillandAcquiredIntangibleAssetsTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsIntangibleAssetsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#GoodwillandAcquiredIntangibleAssetsIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1287b518-eab5-4e87-9da5-8c1a8975fc96" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b313db8a-0f61-46f3-b31a-ab39ab1453cc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1287b518-eab5-4e87-9da5-8c1a8975fc96" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b313db8a-0f61-46f3-b31a-ab39ab1453cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_6dc5244d-dad3-43a6-b3de-da0c1fe5f865" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1287b518-eab5-4e87-9da5-8c1a8975fc96" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_6dc5244d-dad3-43a6-b3de-da0c1fe5f865" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#GoodwillandAcquiredIntangibleAssetsFutureAmortizationExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_ee8d57e7-13df-4462-b131-ddce0c8ac590" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_ee8d57e7-13df-4462-b131-ddce0c8ac590" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_beaed0fe-e6cb-4764-92e6-2b6cfa760298" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_beaed0fe-e6cb-4764-92e6-2b6cfa760298" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_e9cd5136-7488-4fdd-812e-714a4dbcbe20" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_e9cd5136-7488-4fdd-812e-714a4dbcbe20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_4d0f5bd7-0864-4ce0-97cb-a711a50739e4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_4d0f5bd7-0864-4ce0-97cb-a711a50739e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_0f067b01-9faf-4acc-b029-c479f8b9f028" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_0f067b01-9faf-4acc-b029-c479f8b9f028" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_b4523c83-8ba5-40fd-8fd3-ccd144a95df8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_8587b605-4c7e-462d-b272-e3360401014a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_b4523c83-8ba5-40fd-8fd3-ccd144a95df8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsChangestoGoodwillDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#GoodwillandAcquiredIntangibleAssetsChangestoGoodwillDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsChangestoGoodwillDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FinancingArrangements" xlink:type="simple" xlink:href="zi-20200817.xsd#FinancingArrangements"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FinancingArrangements" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FinancingArrangementsTables" xlink:type="simple" xlink:href="zi-20200817.xsd#FinancingArrangementsTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FinancingArrangementsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FinancingArrangementsNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#FinancingArrangementsNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FinancingArrangementsNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FinancingArrangementsCarryingValuesofBorrowingsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#FinancingArrangementsCarryingValuesofBorrowingsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FinancingArrangementsCarryingValuesofBorrowingsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_e0d86ce3-a0fa-438f-abea-e57318497c8a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_32dd706a-2e15-4503-b5f9-e50adc60415a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_e0d86ce3-a0fa-438f-abea-e57318497c8a" xlink:to="loc_us-gaap_LongTermDebtCurrent_32dd706a-2e15-4503-b5f9-e50adc60415a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_01a310c9-83a9-4afb-b6f5-ee9051ed7ae8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_e0d86ce3-a0fa-438f-abea-e57318497c8a" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_01a310c9-83a9-4afb-b6f5-ee9051ed7ae8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FinancingArrangementsExpectedFuturePrincipalPaymentsforBorrowingsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#FinancingArrangementsExpectedFuturePrincipalPaymentsforBorrowingsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FinancingArrangementsExpectedFuturePrincipalPaymentsforBorrowingsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFour_1970ad14-62e7-4be4-bc76-dbf9b2b6fa94" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFour_1970ad14-62e7-4be4-bc76-dbf9b2b6fa94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetRemainderOfFiscalYear_c2d49863-5ecf-472f-9609-3369f5a4ffe1" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetRemainderOfFiscalYear"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetRemainderOfFiscalYear_c2d49863-5ecf-472f-9609-3369f5a4ffe1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo_3cdee454-ef5d-4e1e-a830-1f199967a901" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo_3cdee454-ef5d-4e1e-a830-1f199967a901" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree_c780bdd5-97d7-4c5f-8895-92fd2549f0b5" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree_c780bdd5-97d7-4c5f-8895-92fd2549f0b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne_d11a1050-89c9-412f-9d71-80326094c836" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne_d11a1050-89c9-412f-9d71-80326094c836" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour_942f6378-8794-40fb-a01b-89c16270ff01" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_6406f466-6ba8-4ddb-9a3d-51132cab7fb6" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour_942f6378-8794-40fb-a01b-89c16270ff01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_b9b497b9-13b6-4498-89cd-16118f1b3d5c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearOne_0f186e20-ae38-413b-81ce-e67753d1db36" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearOne"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_b9b497b9-13b6-4498-89cd-16118f1b3d5c" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearOne_0f186e20-ae38-413b-81ce-e67753d1db36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne_1b526513-8d4a-46bd-92ec-8fbb499a4afe" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_b9b497b9-13b6-4498-89cd-16118f1b3d5c" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearOne_1b526513-8d4a-46bd-92ec-8fbb499a4afe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtMaturityAfterYearFour_af097a8e-a2de-471a-9a4f-3f1bc9d704b9" xlink:href="zi-20200817.xsd#zi_LongTermDebtMaturityAfterYearFour"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFour_703631f5-ec87-4ef5-8fe8-c17a992e7770" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFour"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LongTermDebtMaturityAfterYearFour_af097a8e-a2de-471a-9a4f-3f1bc9d704b9" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAfterYearFour_703631f5-ec87-4ef5-8fe8-c17a992e7770" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityAfterYearFour_e20f336d-bba7-46a2-b7fa-082c9f3d6cd3" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityAfterYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LongTermDebtMaturityAfterYearFour_af097a8e-a2de-471a-9a4f-3f1bc9d704b9" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityAfterYearFour_e20f336d-bba7-46a2-b7fa-082c9f3d6cd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_427daff6-9d3c-446e-82f5-48db64bd2333" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_427daff6-9d3c-446e-82f5-48db64bd2333" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_d459204f-b3a8-4cf7-8b6e-bfbc53cb96f9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_d459204f-b3a8-4cf7-8b6e-bfbc53cb96f9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9d212483-0733-4af6-be40-0f9bf793269b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9d212483-0733-4af6-be40-0f9bf793269b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_54edc8a0-fe4e-4c84-91e9-9800e76dbb1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_54edc8a0-fe4e-4c84-91e9-9800e76dbb1c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtMaturityAfterYearFour_90973795-9be2-40cd-b131-c7821365dfff" xlink:href="zi-20200817.xsd#zi_LongTermDebtMaturityAfterYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:to="loc_zi_LongTermDebtMaturityAfterYearFour_90973795-9be2-40cd-b131-c7821365dfff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9e32a71d-eff2-45e0-ab44-fa81268c35ae" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea60290-b4a6-461d-8fcf-a118c7754556" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_9e32a71d-eff2-45e0-ab44-fa81268c35ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_248d41cd-df78-4c07-953c-85cd1ea0772f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo_fa5fa753-4856-4d9f-8162-0d029aaf9f5b" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_248d41cd-df78-4c07-953c-85cd1ea0772f" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearTwo_fa5fa753-4856-4d9f-8162-0d029aaf9f5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearTwo_2542d724-cc97-4399-a72b-f3b13baf1e05" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_248d41cd-df78-4c07-953c-85cd1ea0772f" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearTwo_2542d724-cc97-4399-a72b-f3b13baf1e05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_ec76b1a9-2716-4cd1-a8d2-536798ed4c39" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearFour_b639ecd7-685f-4a60-8e02-61c913053823" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_ec76b1a9-2716-4cd1-a8d2-536798ed4c39" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearFour_b639ecd7-685f-4a60-8e02-61c913053823" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour_1d3783e7-01c6-4c42-bb40-87277dbc0862" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_ec76b1a9-2716-4cd1-a8d2-536798ed4c39" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearFour_1d3783e7-01c6-4c42-bb40-87277dbc0862" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_d1c96782-4fb1-4638-a1a4-fb2a0a19dcb2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityRemainderOfFiscalYear_c7bbbc78-a9f5-4c5f-a412-5f565808c70b" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_d1c96782-4fb1-4638-a1a4-fb2a0a19dcb2" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityRemainderOfFiscalYear_c7bbbc78-a9f5-4c5f-a412-5f565808c70b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetRemainderOfFiscalYear_a63b420e-3fae-4e7d-ae0c-1bf8e5aa5174" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetRemainderOfFiscalYear"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_d1c96782-4fb1-4638-a1a4-fb2a0a19dcb2" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetRemainderOfFiscalYear_a63b420e-3fae-4e7d-ae0c-1bf8e5aa5174" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_68525911-5d3b-4022-8f96-b79d453406f7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree_e96a5cb6-2ccb-4f55-8a6c-b28102609e96" xlink:href="zi-20200817.xsd#zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_68525911-5d3b-4022-8f96-b79d453406f7" xlink:to="loc_zi_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetYearThree_e96a5cb6-2ccb-4f55-8a6c-b28102609e96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearThree_e5a346b2-9eed-4a0b-b879-ddf1b84204ee" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearThree"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_68525911-5d3b-4022-8f96-b79d453406f7" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearThree_e5a346b2-9eed-4a0b-b879-ddf1b84204ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityRemainderOfFiscalYear_7f3bde61-161a-4127-ad64-a0543460d352" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityRemainderOfFiscalYear_7f3bde61-161a-4127-ad64-a0543460d352" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityAfterYearFour_223aba63-1ece-42e0-b129-5ea1fb3c7129" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityAfterYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityAfterYearFour_223aba63-1ece-42e0-b129-5ea1fb3c7129" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearFour_6c1e7c75-9f28-465e-b2e1-243ca4ee3343" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearFour"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearFour_6c1e7c75-9f28-465e-b2e1-243ca4ee3343" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearOne_60669bef-1c82-45dd-ac86-fcb5066f6af6" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearOne"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearOne_60669bef-1c82-45dd-ac86-fcb5066f6af6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearThree_1f0ce3cd-cdbb-47d8-99c3-d5d9d12601aa" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearThree"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearThree_1f0ce3cd-cdbb-47d8-99c3-d5d9d12601aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearTwo_1eab86b3-616c-4aac-91f6-6122b840be6b" xlink:href="zi-20200817.xsd#zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearTwo"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_2917b167-0320-4c31-b551-3bae2e118758" xlink:to="loc_zi_LongTermDebtBeforeDiscountsAndIssuanceCostsMaturityYearTwo_1eab86b3-616c-4aac-91f6-6122b840be6b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FinancingArrangementsExpectedFuturePrincipalPaymentsforBorrowingsDetails_1" xlink:type="simple" xlink:href="zi-20200817.xsd#FinancingArrangementsExpectedFuturePrincipalPaymentsforBorrowingsDetails_1"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FinancingArrangementsExpectedFuturePrincipalPaymentsforBorrowingsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_59a018e1-f3eb-4f62-81c5-ec56587e63cf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_57426006-2cac-41ae-bdca-617436f1a168" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_59a018e1-f3eb-4f62-81c5-ec56587e63cf" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_57426006-2cac-41ae-bdca-617436f1a168" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_fa769295-2428-4097-9626-17ab1a220233" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_59a018e1-f3eb-4f62-81c5-ec56587e63cf" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_fa769295-2428-4097-9626-17ab1a220233" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivities" xlink:type="simple" xlink:href="zi-20200817.xsd#DerivativesandHedgingActivities"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/DerivativesandHedgingActivities" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesTables" xlink:type="simple" xlink:href="zi-20200817.xsd#DerivativesandHedgingActivitiesTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#DerivativesandHedgingActivitiesNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FairValueMeasurements" xlink:type="simple" xlink:href="zi-20200817.xsd#FairValueMeasurements"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FairValueMeasurements" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FairValueMeasurementsTables" xlink:type="simple" xlink:href="zi-20200817.xsd#FairValueMeasurementsTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FairValueMeasurementsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/FairValueMeasurementsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#FairValueMeasurementsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/FairValueMeasurementsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/CommitmentandContingencies" xlink:type="simple" xlink:href="zi-20200817.xsd#CommitmentandContingencies"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/CommitmentandContingencies" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/CommitmentandContingenciesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#CommitmentandContingenciesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/CommitmentandContingenciesDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/Leases" xlink:type="simple" xlink:href="zi-20200817.xsd#Leases"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/Leases" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesTables" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesAdditionalDetailsRelatedtoLeasesRecordedontheBalanceSheetDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesAdditionalDetailsRelatedtoLeasesRecordedontheBalanceSheetDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesAdditionalDetailsRelatedtoLeasesRecordedontheBalanceSheetDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesOtherInformationRelatedtoLeasesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesOtherInformationRelatedtoLeasesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesOtherInformationRelatedtoLeasesDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesUndiscountedFutureMinimumPaymentsUnderNonCancellableLeasesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesUndiscountedFutureMinimumPaymentsUnderNonCancellableLeasesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesUndiscountedFutureMinimumPaymentsUnderNonCancellableLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_d7800737-f00b-4117-a73e-4ba3e9ec53cb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_d553ed42-315d-425e-a3c3-a6f039bc210a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLiability_d7800737-f00b-4117-a73e-4ba3e9ec53cb" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_d553ed42-315d-425e-a3c3-a6f039bc210a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_5f1ef76b-7b5f-4593-abfe-6c82608ad1b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLiability_d7800737-f00b-4117-a73e-4ba3e9ec53cb" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_5f1ef76b-7b5f-4593-abfe-6c82608ad1b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1faa0393-12f5-4443-abe4-d17bbf7e6502" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_1faa0393-12f5-4443-abe4-d17bbf7e6502" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_76f846f0-284b-4f40-b720-966847d0ea77" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_76f846f0-284b-4f40-b720-966847d0ea77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_2caa09b1-d542-4720-9aad-ef3327142a16" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_2caa09b1-d542-4720-9aad-ef3327142a16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_5fb91358-62bc-45c7-8969-def38479c472" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_5fb91358-62bc-45c7-8969-def38479c472" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_bf8a3925-00f8-4587-8085-bcef0e2092fe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_bf8a3925-00f8-4587-8085-bcef0e2092fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_db86ae60-40c6-4d40-a7d0-5ca4368e80f2" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_e2a88acb-ab37-4919-91f1-0ac009b754d6" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_db86ae60-40c6-4d40-a7d0-5ca4368e80f2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesUndiscountedFutureMinimumPaymentsUnderNonCancellableLeasesDetails_1" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesUndiscountedFutureMinimumPaymentsUnderNonCancellableLeasesDetails_1"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesUndiscountedFutureMinimumPaymentsUnderNonCancellableLeasesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aa541727-b4d6-43d5-a6c5-9e4f4263410d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_8a6f4fbb-cdac-4557-a8bf-fec9cee414d4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aa541727-b4d6-43d5-a6c5-9e4f4263410d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_8a6f4fbb-cdac-4557-a8bf-fec9cee414d4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_b3b0125a-a621-49c0-bb36-8e2ca4887716" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_aa541727-b4d6-43d5-a6c5-9e4f4263410d" xlink:to="loc_us-gaap_OperatingLeaseLiability_b3b0125a-a621-49c0-bb36-8e2ca4887716" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesRentpaymentsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesRentpaymentsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesRentpaymentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_dcbb7e92-70a0-4e01-a78e-3922240cc66b" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_da6e769f-c9d1-4618-a58e-5d0cde22a0fb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_dcbb7e92-70a0-4e01-a78e-3922240cc66b" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_da6e769f-c9d1-4618-a58e-5d0cde22a0fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_02da980c-4676-45aa-8543-2cdfa4759a4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_dcbb7e92-70a0-4e01-a78e-3922240cc66b" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_02da980c-4676-45aa-8543-2cdfa4759a4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo_b8b7456d-1551-41c8-90cd-9408ba3223de" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_6f16faa2-d6f9-4b91-9416-ff3b6f82c922" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo_b8b7456d-1551-41c8-90cd-9408ba3223de" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_6f16faa2-d6f9-4b91-9416-ff3b6f82c922" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_aa7c6fcf-a791-4250-bc6d-e84d8c5e7153" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo_b8b7456d-1551-41c8-90cd-9408ba3223de" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_aa7c6fcf-a791-4250-bc6d-e84d8c5e7153" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree_ba5537a1-625e-4cfc-9086-ed6c8ba142fe" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_b48fe8e5-ce5f-46c0-b8ef-f9cba5e96b65" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree_ba5537a1-625e-4cfc-9086-ed6c8ba142fe" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_b48fe8e5-ce5f-46c0-b8ef-f9cba5e96b65" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_f1983947-07ac-41b1-8788-98258d476e5c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree_ba5537a1-625e-4cfc-9086-ed6c8ba142fe" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_f1983947-07ac-41b1-8788-98258d476e5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour_90a2aa5d-aecc-4931-bbb8-1a98d2f15830" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_3b98451c-301f-4b36-a00b-602e0a1d6822" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour_90a2aa5d-aecc-4931-bbb8-1a98d2f15830" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_3b98451c-301f-4b36-a00b-602e0a1d6822" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_6a9dfcce-6e2a-4e29-b871-a5576ccea90c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour_90a2aa5d-aecc-4931-bbb8-1a98d2f15830" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_6a9dfcce-6e2a-4e29-b871-a5576ccea90c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne_ab82ad57-7d50-472e-9b18-0a00cb80a20e" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_a137d5d5-7af0-4402-b04d-ecb6cd2f4be3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne_ab82ad57-7d50-472e-9b18-0a00cb80a20e" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_a137d5d5-7af0-4402-b04d-ecb6cd2f4be3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_8b6b136c-a123-45e2-917e-c16da377d31b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne_ab82ad57-7d50-472e-9b18-0a00cb80a20e" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_8b6b136c-a123-45e2-917e-c16da377d31b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive_71b4c5cd-f3a1-4b12-be6d-129bd09d11c9" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_8639bdd2-2555-41c3-83b9-900ab531ee38" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive_71b4c5cd-f3a1-4b12-be6d-129bd09d11c9" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_8639bdd2-2555-41c3-83b9-900ab531ee38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_018317aa-2823-46f3-b4ae-8f4ebdc857a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive_71b4c5cd-f3a1-4b12-be6d-129bd09d11c9" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_018317aa-2823-46f3-b4ae-8f4ebdc857a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_ad9d5cea-2ec7-4a77-a47e-5433fd0b5a0c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_ad9d5cea-2ec7-4a77-a47e-5433fd0b5a0c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_8727ee44-d3cb-4e10-903b-3e581a3024e2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_8727ee44-d3cb-4e10-903b-3e581a3024e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_8c4fca0b-5449-4f9d-88b7-7c5196b117cc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_8c4fca0b-5449-4f9d-88b7-7c5196b117cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_021a7195-bb19-431d-a3dd-df26f7ce51dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_021a7195-bb19-431d-a3dd-df26f7ce51dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_8a8412e9-f4d6-47f4-824f-2f8ce1a1d6da" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_8a8412e9-f4d6-47f4-824f-2f8ce1a1d6da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_cfd79acf-e5cb-4e83-befc-3e707a2cfe98" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_771b79fe-3bcf-4c71-883f-309a21e0440f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_cfd79acf-e5cb-4e83-befc-3e707a2cfe98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_695dbfc7-b346-4053-bf29-84aff7ed3c4e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_695dbfc7-b346-4053-bf29-84aff7ed3c4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_529a868a-d61b-4536-b131-2dc3ff57b3ea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_529a868a-d61b-4536-b131-2dc3ff57b3ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_98d99b65-1dbe-468c-80bf-3cfc8797ca52" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_98d99b65-1dbe-468c-80bf-3cfc8797ca52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_7c632432-1206-406a-a0eb-f806e64cee14" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_7c632432-1206-406a-a0eb-f806e64cee14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_598685e7-9ed1-46cb-a30e-45a4817bbfe8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_598685e7-9ed1-46cb-a30e-45a4817bbfe8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_d39174cc-2698-4c8b-a68c-a2d93df412d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_427624bd-2597-436a-b3ab-c9cf41ed330d" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_d39174cc-2698-4c8b-a68c-a2d93df412d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive_4c61bb21-da3c-41f8-ac62-c1ebf0ba377a" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_a89c37a4-306c-49af-8c9c-58d0f9a08d20" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive_4c61bb21-da3c-41f8-ac62-c1ebf0ba377a" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_a89c37a4-306c-49af-8c9c-58d0f9a08d20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_73687304-0a61-4e53-a3c2-1c240f386edc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive_4c61bb21-da3c-41f8-ac62-c1ebf0ba377a" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_73687304-0a61-4e53-a3c2-1c240f386edc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LeasesRentpaymentsDetails_1" xlink:type="simple" xlink:href="zi-20200817.xsd#LeasesRentpaymentsDetails_1"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LeasesRentpaymentsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive_5f43ef2a-1d64-486d-b02c-9c56d45b6790" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFive_5f43ef2a-1d64-486d-b02c-9c56d45b6790" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne_18c64fec-828f-4b64-9ccc-661699f64c93" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearOne_18c64fec-828f-4b64-9ccc-661699f64c93" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive_d33cd57f-ca04-49f2-9878-c68f1f3ae94b" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeAfterYearFive_d33cd57f-ca04-49f2-9878-c68f1f3ae94b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo_86c3c448-0a27-44bb-8c9f-c44f33e9539f" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearTwo_86c3c448-0a27-44bb-8c9f-c44f33e9539f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree_9de749f2-d214-49d8-97e4-b5c86c62262a" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearThree_9de749f2-d214-49d8-97e4-b5c86c62262a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour_e709ffb5-496d-4a42-bb6c-dad9f4a3a28f" xlink:href="zi-20200817.xsd#zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDue_8bd83704-b491-4537-ab78-74560f160e56" xlink:to="loc_zi_LesseeOperatingLeaseLiabilityPaymentsNetOfSubleaseIncomeDueYearFour_e709ffb5-496d-4a42-bb6c-dad9f4a3a28f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/NoncontrollingInterest" xlink:type="simple" xlink:href="zi-20200817.xsd#NoncontrollingInterest"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/NoncontrollingInterest" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/NoncontrollingInterestDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#NoncontrollingInterestDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/NoncontrollingInterestDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LossPerShare" xlink:type="simple" xlink:href="zi-20200817.xsd#LossPerShare"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LossPerShare" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LossPerShareTables" xlink:type="simple" xlink:href="zi-20200817.xsd#LossPerShareTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LossPerShareTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LossPerShareBasicandDilutedNetLossPerShareDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LossPerShareBasicandDilutedNetLossPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LossPerShareBasicandDilutedNetLossPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_7823c3cb-d4b4-4414-ace9-547bb7e04712" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_UndistributedEarningsDilutedIncreaseDecreaseInEarningsUponConversionOfPotentiallyDilutiveInstruments_3492b02a-9c7f-4083-a0ec-914afcc7dda4" xlink:href="zi-20200817.xsd#zi_UndistributedEarningsDilutedIncreaseDecreaseInEarningsUponConversionOfPotentiallyDilutiveInstruments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_7823c3cb-d4b4-4414-ace9-547bb7e04712" xlink:to="loc_zi_UndistributedEarningsDilutedIncreaseDecreaseInEarningsUponConversionOfPotentiallyDilutiveInstruments_3492b02a-9c7f-4083-a0ec-914afcc7dda4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_60df772f-49df-483c-b2ee-2b1c74362ea8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_7823c3cb-d4b4-4414-ace9-547bb7e04712" xlink:to="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersBasic_60df772f-49df-483c-b2ee-2b1c74362ea8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfPotentiallyDilutiveInstruments_46e0dcfd-d251-4c5e-8a42-d8de2ba9fafb" xlink:href="zi-20200817.xsd#zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfPotentiallyDilutiveInstruments"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_7823c3cb-d4b4-4414-ace9-547bb7e04712" xlink:to="loc_zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfPotentiallyDilutiveInstruments_46e0dcfd-d251-4c5e-8a42-d8de2ba9fafb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfCommonStock_86854f73-ad2d-4b51-92fa-016e95c996a6" xlink:href="zi-20200817.xsd#zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfCommonStock"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_UndistributedEarningsLossAvailableToCommonShareholdersDiluted_7823c3cb-d4b4-4414-ace9-547bb7e04712" xlink:to="loc_zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfCommonStock_86854f73-ad2d-4b51-92fa-016e95c996a6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_00046cd8-2231-4c74-a731-7eafaf64eef7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_8deccfb6-007b-4408-a435-af98318e901e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_00046cd8-2231-4c74-a731-7eafaf64eef7" xlink:to="loc_us-gaap_ProfitLoss_8deccfb6-007b-4408-a435-af98318e901e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_NetIncomeLossAttributableToParentPriorToReorganization_5c0269ce-2096-40ab-8b3c-488fc80efd6e" xlink:href="zi-20200817.xsd#zi_NetIncomeLossAttributableToParentPriorToReorganization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_00046cd8-2231-4c74-a731-7eafaf64eef7" xlink:to="loc_zi_NetIncomeLossAttributableToParentPriorToReorganization_5c0269ce-2096-40ab-8b3c-488fc80efd6e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_ExcessConsiderationPaidToHoldersOfPreferredUnitsAttributableToCommonShares_0d117886-0dcb-4a73-b826-b293351c6039" xlink:href="zi-20200817.xsd#zi_ExcessConsiderationPaidToHoldersOfPreferredUnitsAttributableToCommonShares"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_00046cd8-2231-4c74-a731-7eafaf64eef7" xlink:to="loc_zi_ExcessConsiderationPaidToHoldersOfPreferredUnitsAttributableToCommonShares_0d117886-0dcb-4a73-b826-b293351c6039" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_9b56d0da-9fe2-4a84-99be-8d7de1722bee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_00046cd8-2231-4c74-a731-7eafaf64eef7" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_9b56d0da-9fe2-4a84-99be-8d7de1722bee" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/LossPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetLossPerShareDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#LossPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetLossPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/LossPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetLossPerShareDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/MembersDeficit" xlink:type="simple" xlink:href="zi-20200817.xsd#MembersDeficit"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/MembersDeficit" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/MembersDeficitDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#MembersDeficitDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/MembersDeficitDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnits" xlink:type="simple" xlink:href="zi-20200817.xsd#RedeemableSeriesAPreferredUnits"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnits" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnitsTables" xlink:type="simple" xlink:href="zi-20200817.xsd#RedeemableSeriesAPreferredUnitsTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnitsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnitsNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#RedeemableSeriesAPreferredUnitsNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnitsNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnitsDebtInstrumentRedemptionDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#RedeemableSeriesAPreferredUnitsDebtInstrumentRedemptionDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/RedeemableSeriesAPreferredUnitsDebtInstrumentRedemptionDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EmployeeRetirementBenefits" xlink:type="simple" xlink:href="zi-20200817.xsd#EmployeeRetirementBenefits"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EmployeeRetirementBenefits" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EmployeeRetirementBenefitsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EmployeeRetirementBenefitsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EmployeeRetirementBenefitsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensation" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensation"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensation" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationTables" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationScheduleofValuationAssumptionsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationScheduleofValuationAssumptionsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationScheduleofValuationAssumptionsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationRestrictedStockUnitsActivityDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationRestrictedStockUnitsActivityDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationRestrictedStockUnitsActivityDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationClassACommonStockOptionsActivityDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationClassACommonStockOptionsActivityDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationClassACommonStockOptionsActivityDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationUnitsActivityDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationUnitsActivityDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationUnitsActivityDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/EquityBasedCompensationEquityBasedCompensationExpenseandSummaryofUnamortizedEquityBasedCompensationCostsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#EquityBasedCompensationEquityBasedCompensationExpenseandSummaryofUnamortizedEquityBasedCompensationCostsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/EquityBasedCompensationEquityBasedCompensationExpenseandSummaryofUnamortizedEquityBasedCompensationCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2976b178-65d9-4f2b-b696-93fe8f4ffcf8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_7ecf55db-9379-4b11-8b2a-35ebec01cb0d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2976b178-65d9-4f2b-b696-93fe8f4ffcf8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_7ecf55db-9379-4b11-8b2a-35ebec01cb0d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_9c14d4e8-638a-492b-b213-7fc36e48a2f7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_2976b178-65d9-4f2b-b696-93fe8f4ffcf8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_9c14d4e8-638a-492b-b213-7fc36e48a2f7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/SegmentandGeographicData" xlink:type="simple" xlink:href="zi-20200817.xsd#SegmentandGeographicData"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/SegmentandGeographicData" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/SegmentandGeographicDataTables" xlink:type="simple" xlink:href="zi-20200817.xsd#SegmentandGeographicDataTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/SegmentandGeographicDataTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/SegmentandGeographicDataDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#SegmentandGeographicDataDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/SegmentandGeographicDataDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/IncomeTaxProvision" xlink:type="simple" xlink:href="zi-20200817.xsd#IncomeTaxProvision"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/IncomeTaxProvision" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/IncomeTaxProvisionTables" xlink:type="simple" xlink:href="zi-20200817.xsd#IncomeTaxProvisionTables"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/IncomeTaxProvisionTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/IncomeTaxProvisionNarrativeDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#IncomeTaxProvisionNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/IncomeTaxProvisionNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/IncomeTaxProvisionScheduleofIncomeTaxesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#IncomeTaxProvisionScheduleofIncomeTaxesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/IncomeTaxProvisionScheduleofIncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_922e9a13-7284-4778-b729-3a4728cc54af" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_40611cfb-eb96-485e-96d4-2e205abb0c36" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_922e9a13-7284-4778-b729-3a4728cc54af" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_40611cfb-eb96-485e-96d4-2e205abb0c36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_3905fc5c-61aa-46ac-8740-5c418f706b0a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_922e9a13-7284-4778-b729-3a4728cc54af" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_3905fc5c-61aa-46ac-8740-5c418f706b0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_1b403ed2-3034-473c-a996-800f0ba32f27" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_922e9a13-7284-4778-b729-3a4728cc54af" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_1b403ed2-3034-473c-a996-800f0ba32f27" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_f79cbc7a-7939-47c8-a6e8-962290516af2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_c80d4458-6fd5-4d45-9e15-100d947f47c0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_f79cbc7a-7939-47c8-a6e8-962290516af2" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_c80d4458-6fd5-4d45-9e15-100d947f47c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_a94652ad-baed-4fea-bbfb-688a2dfaaab9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_f79cbc7a-7939-47c8-a6e8-962290516af2" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_a94652ad-baed-4fea-bbfb-688a2dfaaab9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_7c01dc2d-8866-4bd6-865e-0d2f1f2637ab" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9a6d306a-98a5-4c7a-92fd-84fd1764f579" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7c01dc2d-8866-4bd6-865e-0d2f1f2637ab" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9a6d306a-98a5-4c7a-92fd-84fd1764f579" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_1e64a95e-f40f-4c75-a03f-05849e801ffb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_7c01dc2d-8866-4bd6-865e-0d2f1f2637ab" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_1e64a95e-f40f-4c75-a03f-05849e801ffb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/IncomeTaxProvisionScheduleofEffectiveIncomeTaxReconciliationDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#IncomeTaxProvisionScheduleofEffectiveIncomeTaxReconciliationDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/IncomeTaxProvisionScheduleofEffectiveIncomeTaxReconciliationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/IncomeTaxProvisionDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#IncomeTaxProvisionDeferredTaxAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/IncomeTaxProvisionDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_67c4a9cd-25aa-48d1-a234-a21b81eac0b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_ec9d872f-c147-4447-b122-b99ffc555658" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_67c4a9cd-25aa-48d1-a234-a21b81eac0b1" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_ec9d872f-c147-4447-b122-b99ffc555658" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_3e930916-2d01-477d-94e4-31fbb5b0b907" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_67c4a9cd-25aa-48d1-a234-a21b81eac0b1" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_3e930916-2d01-477d-94e4-31fbb5b0b907" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_zi_DeferredTaxAssetsInterestExpenseCarryforward_1e66253c-8a54-49ad-abc7-b8b497b7b790" xlink:href="zi-20200817.xsd#zi_DeferredTaxAssetsInterestExpenseCarryforward"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_67c4a9cd-25aa-48d1-a234-a21b81eac0b1" xlink:to="loc_zi_DeferredTaxAssetsInterestExpenseCarryforward_1e66253c-8a54-49ad-abc7-b8b497b7b790" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_7222d43f-d6c7-49c3-9c13-71e6b5d0f722" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_67c4a9cd-25aa-48d1-a234-a21b81eac0b1" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_7222d43f-d6c7-49c3-9c13-71e6b5d0f722" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_6c41e145-5995-4d37-a7fa-1726b6e1d101" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_03646d2f-0545-4fa5-9146-5e1a27e6aff9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_6c41e145-5995-4d37-a7fa-1726b6e1d101" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_03646d2f-0545-4fa5-9146-5e1a27e6aff9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_8c908f76-adf6-4d5e-8b2a-8c6922e022bd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_6c41e145-5995-4d37-a7fa-1726b6e1d101" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_8c908f76-adf6-4d5e-8b2a-8c6922e022bd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_601b12b4-5e36-48fd-8a97-9efe22114e83" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_6c41e145-5995-4d37-a7fa-1726b6e1d101" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_601b12b4-5e36-48fd-8a97-9efe22114e83" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.zoominfo.com/role/SubsequentEvents" xlink:type="simple" xlink:href="zi-20200817.xsd#SubsequentEvents"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/SubsequentEvents" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.zoominfo.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="zi-20200817.xsd#SubsequentEventsDetails"/>
  <link:calculationLink xlink:role="http://www.zoominfo.com/role/SubsequentEventsDetails" xlink:type="extended"/>
</link:linkbase>
