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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2022 Workiva-->
<!--r:c9d81e8c-eb3e-4158-89a0-28bc8ce5a461,g:5b118e54-7bac-4712-8dbc-8521e2f5dcbc-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:zi="http://www.zoominfo.com/20220930" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.zoominfo.com/20220930">
  <xs:import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/stpr/2022" schemaLocation="https://xbrl.sec.gov/stpr/2022/stpr-2022.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="zi-20220930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="zi-20220930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="zi-20220930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="zi-20220930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Coverpage" roleURI="http://www.zoominfo.com/role/Coverpage">
        <link:definition>0000001 - Document - Cover page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheets" roleURI="http://www.zoominfo.com/role/CondensedConsolidatedBalanceSheets">
        <link:definition>0000002 - Statement - Condensed Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedBalanceSheetsParenthetical" roleURI="http://www.zoominfo.com/role/CondensedConsolidatedBalanceSheetsParenthetical">
        <link:definition>0000003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofOperations" roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofOperations">
        <link:definition>0000004 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofOperationsParenthetical" roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofOperationsParenthetical">
        <link:definition>0000005 - Statement - Consolidated Statements of Operations (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofComprehensiveIncomeLoss" roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofComprehensiveIncomeLoss">
        <link:definition>0000006 - Statement - Consolidated Statements of Comprehensive Income (Loss)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofChangesinEquityDeficit" roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofChangesinEquityDeficit">
        <link:definition>0000007 - Statement - Consolidated Statements of Changes in Equity (Deficit)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>0000008 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationandBackground" roleURI="http://www.zoominfo.com/role/OrganizationandBackground">
        <link:definition>0000009 - Disclosure - Organization and Background</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPolicies" roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies">
        <link:definition>0000010 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractswithCustomers" roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomers">
        <link:definition>0000011 - Disclosure - Revenue from Contracts with Customers</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinations" roleURI="http://www.zoominfo.com/role/BusinessCombinations">
        <link:definition>0000012 - Disclosure - Business Combinations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashCashEquivalentsandShorttermInvestments" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestments">
        <link:definition>0000013 - Disclosure - Cash, Cash Equivalents, and Short-term Investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipment" roleURI="http://www.zoominfo.com/role/PropertyandEquipment">
        <link:definition>0000014 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandAcquiredIntangibleAssets" roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssets">
        <link:definition>0000015 - Disclosure - Goodwill and Acquired Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingArrangements" roleURI="http://www.zoominfo.com/role/FinancingArrangements">
        <link:definition>0000016 - Disclosure - Financing Arrangements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivities" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivities">
        <link:definition>0000017 - Disclosure - Derivatives and Hedging Activities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValue" roleURI="http://www.zoominfo.com/role/FairValue">
        <link:definition>0000018 - Disclosure - Fair Value</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentandContingencies" roleURI="http://www.zoominfo.com/role/CommitmentandContingencies">
        <link:definition>0000019 - Disclosure - Commitment and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncontrollingInterest" roleURI="http://www.zoominfo.com/role/NoncontrollingInterest">
        <link:definition>0000020 - Disclosure - Noncontrolling Interest</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.zoominfo.com/role/EarningsPerShare">
        <link:definition>0000021 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://www.zoominfo.com/role/Leases">
        <link:definition>0000022 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensation" roleURI="http://www.zoominfo.com/role/EquitybasedCompensation">
        <link:definition>0000023 - Disclosure - Equity-based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxReceivableAgreements" roleURI="http://www.zoominfo.com/role/TaxReceivableAgreements">
        <link:definition>0000024 - Disclosure - Tax Receivable Agreements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.zoominfo.com/role/IncomeTaxes">
        <link:definition>0000025 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>0000026 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractswithCustomersTables" roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersTables">
        <link:definition>0000027 - Disclosure - Revenue from Contracts with Customers (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsTables" roleURI="http://www.zoominfo.com/role/BusinessCombinationsTables">
        <link:definition>0000028 - Disclosure - Business Combinations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashCashEquivalentsandShorttermInvestmentsTables" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestmentsTables">
        <link:definition>0000029 - Disclosure - Cash, Cash Equivalents, and Short-term Investments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentTables" roleURI="http://www.zoominfo.com/role/PropertyandEquipmentTables">
        <link:definition>0000030 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandAcquiredIntangibleAssetsTables" roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsTables">
        <link:definition>0000031 - Disclosure - Goodwill and Acquired Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingArrangementsTables" roleURI="http://www.zoominfo.com/role/FinancingArrangementsTables">
        <link:definition>0000032 - Disclosure - Financing Arrangements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesTables" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesTables">
        <link:definition>0000033 - Disclosure - Derivatives and Hedging Activities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueTables" roleURI="http://www.zoominfo.com/role/FairValueTables">
        <link:definition>0000034 - Disclosure - Fair Value (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://www.zoominfo.com/role/EarningsPerShareTables">
        <link:definition>0000035 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.zoominfo.com/role/LeasesTables">
        <link:definition>0000036 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationTables" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationTables">
        <link:definition>0000037 - Disclosure - Equity-based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationandBackgroundDetails" roleURI="http://www.zoominfo.com/role/OrganizationandBackgroundDetails">
        <link:definition>0000038 - Disclosure - Organization and Background (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPresentationandSummaryofSignificantAccountingPoliciesDetails" roleURI="http://www.zoominfo.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDetails">
        <link:definition>0000039 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractswithCustomersRevenueDisaggregatedbyServiceOfferingDetails" roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRevenueDisaggregatedbyServiceOfferingDetails">
        <link:definition>0000040 - Disclosure - Revenue from Contracts with Customers - Revenue Disaggregated by Service Offering (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractswithCustomersNarrativeDetails" roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersNarrativeDetails">
        <link:definition>0000041 - Disclosure - Revenue from Contracts with Customers - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails" roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails">
        <link:definition>0000042 - Disclosure - Revenue from Contracts with Customers - Remaining Performance Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails_1" roleURI="http://www.zoominfo.com/role/RevenuefromContractswithCustomersRemainingPerformanceObligationsDetails_1">
        <link:definition>0000042 - Disclosure - Revenue from Contracts with Customers - Remaining Performance Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsNarrativeDetails" roleURI="http://www.zoominfo.com/role/BusinessCombinationsNarrativeDetails">
        <link:definition>0000043 - Disclosure - Business Combinations - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsAcquisitionDateFairValueofConsiderationTransferredDetails" roleURI="http://www.zoominfo.com/role/BusinessCombinationsAcquisitionDateFairValueofConsiderationTransferredDetails">
        <link:definition>0000044 - Disclosure - Business Combinations - Acquisition Date Fair Value of Consideration Transferred (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsFairValuesofAssetsAcquiredandLiabilitiesAssumedDetails" roleURI="http://www.zoominfo.com/role/BusinessCombinationsFairValuesofAssetsAcquiredandLiabilitiesAssumedDetails">
        <link:definition>0000045 - Disclosure - Business Combinations - Fair Values of Assets Acquired and Liabilities Assumed (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsComponentsofIdentifiableIntangibleAssetsAcquiredDetails" roleURI="http://www.zoominfo.com/role/BusinessCombinationsComponentsofIdentifiableIntangibleAssetsAcquiredDetails">
        <link:definition>0000046 - Disclosure - Business Combinations - Components of Identifiable Intangible Assets Acquired (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationsProFormaDetails" roleURI="http://www.zoominfo.com/role/BusinessCombinationsProFormaDetails">
        <link:definition>0000047 - Disclosure - Business Combinations - Pro Forma (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashCashEquivalentsandShorttermInvestmentsComponentsDetails" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestmentsComponentsDetails">
        <link:definition>0000048 - Disclosure - Cash, Cash Equivalents, and Short-term Investments - Components (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashCashEquivalentsandShorttermInvestmentsComponentsDetails_1" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestmentsComponentsDetails_1">
        <link:definition>0000048 - Disclosure - Cash, Cash Equivalents, and Short-term Investments - Components (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CashCashEquivalentsandShorttermInvestmentsCostandEstimatedFairValueDetails" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestmentsCostandEstimatedFairValueDetails">
        <link:definition>0000049 - Disclosure - Cash, Cash Equivalents, and Short-term Investments - Cost and Estimated Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentDetails" roleURI="http://www.zoominfo.com/role/PropertyandEquipmentDetails">
        <link:definition>0000050 - Disclosure - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandAcquiredIntangibleAssetsIntangibleAssetsDetails" roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsIntangibleAssetsDetails">
        <link:definition>0000051 - Disclosure - Goodwill and Acquired Intangible Assets - Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillandAcquiredIntangibleAssetsChangestoGoodwillDetails" roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsChangestoGoodwillDetails">
        <link:definition>0000052 - Disclosure - Goodwill and Acquired Intangible Assets - Changes to Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingArrangementsCarryingValuesofBorrowingsDetails" roleURI="http://www.zoominfo.com/role/FinancingArrangementsCarryingValuesofBorrowingsDetails">
        <link:definition>0000053 - Disclosure - Financing Arrangements - Carrying Values of Borrowings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingArrangementsFirstLienDetails" roleURI="http://www.zoominfo.com/role/FinancingArrangementsFirstLienDetails">
        <link:definition>0000054 - Disclosure - Financing Arrangements - First Lien (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancingArrangementsSeniorNotesDetails" roleURI="http://www.zoominfo.com/role/FinancingArrangementsSeniorNotesDetails">
        <link:definition>0000055 - Disclosure - Financing Arrangements - Senior Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesNarrativeDetails" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesNarrativeDetails">
        <link:definition>0000056 - Disclosure - Derivatives and Hedging Activities - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails">
        <link:definition>0000057 - Disclosure - Derivatives and Hedging Activities - Outstanding Interest Rate Derivatives Designated as Cash Flow Hedges of Interest Rate Risk (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails">
        <link:definition>0000058 - Disclosure - Derivatives and Hedging Activities - Fair Value and Presentation in the Consolidated Balance Sheets for Derivatives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueDetails" roleURI="http://www.zoominfo.com/role/FairValueDetails">
        <link:definition>0000059 - Disclosure - Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentandContingenciesDetails" roleURI="http://www.zoominfo.com/role/CommitmentandContingenciesDetails">
        <link:definition>0000060 - Disclosure - Commitment and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NoncontrollingInterestDetails" roleURI="http://www.zoominfo.com/role/NoncontrollingInterestDetails">
        <link:definition>0000061 - Disclosure - Noncontrolling Interest (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareBasicandDilutedNetLossPerShareDetails" roleURI="http://www.zoominfo.com/role/EarningsPerShareBasicandDilutedNetLossPerShareDetails">
        <link:definition>0000062 - Disclosure - Earnings Per Share - Basic and Diluted Net Loss Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetLossPerShareDetails" roleURI="http://www.zoominfo.com/role/EarningsPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetLossPerShareDetails">
        <link:definition>0000063 - Disclosure - Earnings Per Share - Potential Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://www.zoominfo.com/role/LeasesNarrativeDetails">
        <link:definition>0000064 - Disclosure - Leases - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesAdditionalDetailsRelatedtoLeasesRecordedontheBalanceSheetDetails" roleURI="http://www.zoominfo.com/role/LeasesAdditionalDetailsRelatedtoLeasesRecordedontheBalanceSheetDetails">
        <link:definition>0000065 - Disclosure - Leases - Additional Details Related to Leases Recorded on the Balance Sheet (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesOtherInformationRelatedtoLeasesDetails" roleURI="http://www.zoominfo.com/role/LeasesOtherInformationRelatedtoLeasesDetails">
        <link:definition>0000066 - Disclosure - Leases - Other Information Related to Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumPaymentsUnderNonCancelableLeasesDetails" roleURI="http://www.zoominfo.com/role/LeasesFutureMinimumPaymentsUnderNonCancelableLeasesDetails">
        <link:definition>0000067 - Disclosure - Leases - Future Minimum Payments Under Non-Cancelable Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFutureMinimumPaymentsUnderNonCancelableLeasesDetails_1" roleURI="http://www.zoominfo.com/role/LeasesFutureMinimumPaymentsUnderNonCancelableLeasesDetails_1">
        <link:definition>0000067 - Disclosure - Leases - Future Minimum Payments Under Non-Cancelable Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationNarrativeDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationNarrativeDetails">
        <link:definition>0000068 - Disclosure - Equity-based Compensation - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationRestrictedStockActivityDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationRestrictedStockActivityDetails">
        <link:definition>0000069 - Disclosure - Equity-based Compensation - Restricted Stock Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationClassACommonStockOptionsActivityDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationClassACommonStockOptionsActivityDetails">
        <link:definition>0000070 - Disclosure - Equity-based Compensation - Class A Common Stock Options Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationHoldCoUnitActivityDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationHoldCoUnitActivityDetails">
        <link:definition>0000071 - Disclosure - Equity-based Compensation - HoldCo Unit Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationClassPUnitsActivityDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationClassPUnitsActivityDetails">
        <link:definition>0000072 - Disclosure - Equity-based Compensation - Class P Units Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationLTIPUnitsActivityDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationLTIPUnitsActivityDetails">
        <link:definition>0000073 - Disclosure - Equity-based Compensation - LTIP Units Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationEmployeeStockPurchasePlanDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationEmployeeStockPurchasePlanDetails">
        <link:definition>0000074 - Disclosure - Equity-based Compensation - Employee Stock Purchase Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EquitybasedCompensationUnamortizedEquitybasedCompensationCostsDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationUnamortizedEquitybasedCompensationCostsDetails">
        <link:definition>0000075 - Disclosure - Equity-based Compensation - Unamortized Equity-based Compensation Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxReceivableAgreementsDetails" roleURI="http://www.zoominfo.com/role/TaxReceivableAgreementsDetails">
        <link:definition>0000076 - Disclosure - Tax Receivable Agreements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDetails" roleURI="http://www.zoominfo.com/role/IncomeTaxesDetails">
        <link:definition>0000077 - Disclosure - Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="zi_FirstLienCreditAgreementAmendmentMember" abstract="true" name="FirstLienCreditAgreementAmendmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_A2019PhantomUnitPlanMember" abstract="true" name="A2019PhantomUnitPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_AccruedLiabilitiesCurrentMember" abstract="true" name="AccruedLiabilitiesCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_LesseeOperatingLeaseNumberOfOfficesSubleased" abstract="false" name="LesseeOperatingLeaseNumberOfOfficesSubleased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="zi_LTIPUnitsMember" abstract="true" name="LTIPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_AffectLayerIncDbaChorusaiChorusaiMember" abstract="true" name="AffectLayerIncDbaChorusaiChorusaiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_EmailVerificationServiceMember" abstract="true" name="EmailVerificationServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_LesseeOperatingLeaseNumberOfOptionsForExtension" abstract="false" name="LesseeOperatingLeaseNumberOfOptionsForExtension" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="zi_BlockerMergersMember" abstract="true" name="BlockerMergersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_IncentiveUnitsMember" abstract="true" name="IncentiveUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_TaxReceivableAgreementsPolicyPolicyTextBlock" abstract="false" name="TaxReceivableAgreementsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="zi_BusinessCombinationConsiderationTransferredCertainUnvestedOptionsIssued" abstract="false" name="BusinessCombinationConsiderationTransferredCertainUnvestedOptionsIssued" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_TaxReceivableAgreementsDisclosureTextBlock" abstract="false" name="TaxReceivableAgreementsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="zi_LessorOperatingLeaseRemainingSubleaseTerm" abstract="false" name="LessorOperatingLeaseRemainingSubleaseTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_TaxReceivableAgreementTaxBenefitsRealizedWhichMustThenBePaidPercentage" abstract="false" name="TaxReceivableAgreementTaxBenefitsRealizedWhichMustThenBePaidPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="zi_HSKBIClass1UnitsMember" abstract="true" name="HSKBIClass1UnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_DogpatchAdvisorsLLCMember" abstract="true" name="DogpatchAdvisorsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_A3875SeniorNotesMember" abstract="true" name="A3875SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_OtherComprehensiveIncomeLossCashFlowHedgeEffectOfDeDesignationOfHedgeAfterTax" abstract="false" name="OtherComprehensiveIncomeLossCashFlowHedgeEffectOfDeDesignationOfHedgeAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ForwardStartingInterestRateSwapMember" abstract="true" name="ForwardStartingInterestRateSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_OpCoUnitsMember" abstract="true" name="OpCoUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_OtherGovernmentalSecuritiesMember" abstract="true" name="OtherGovernmentalSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEconomicEquivalentOfAwardGrantedShares" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEconomicEquivalentOfAwardGrantedShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="zi_HSKBUnitsMember" abstract="true" name="HSKBUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_BusinessCombinationAdditionalConsiderationTransferred" abstract="false" name="BusinessCombinationAdditionalConsiderationTransferred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfSharesWithheldForFuturePurchases" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfSharesWithheldForFuturePurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationAccrualsFromAdjustmentsToWorkingCapitalBalances" abstract="false" name="BusinessCombinationAccrualsFromAdjustmentsToWorkingCapitalBalances" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_A2022BusinessAcquisitionsMember" abstract="true" name="A2022BusinessAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_TaxReceivableAgreementsAbstract" abstract="true" name="TaxReceivableAgreementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="zi_BusinessCombinationContingentConsiderationEquityAwards" abstract="false" name="BusinessCombinationContingentConsiderationEquityAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BrandPortfolioMember" abstract="true" name="BrandPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_CapitalAllocatedForFutureDistributionDistributionTerm" abstract="false" name="CapitalAllocatedForFutureDistributionDistributionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentCashRefundFromAcquisition" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentCashRefundFromAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsExchanged" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsExchanged" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="zi_PaymentsForTaxReceivableAgreements" abstract="false" name="PaymentsForTaxReceivableAgreements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentPaymentsToAcquireBusinessesNetOfCashAcquired" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentPaymentsToAcquireBusinessesNetOfCashAcquired" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_PhantomUnitsMember" abstract="true" name="PhantomUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledUponConversion" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledUponConversion" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="zi_PerformanceBasedRestrictedStockUnitsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_CommonUnitsMember" abstract="true" name="CommonUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPaymentsToAcquireBusinessesGrossExcludingPurchaseConsiderationLiabilitiesI" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPaymentsToAcquireBusinessesGrossExcludingPurchaseConsiderationLiabilitiesI" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledUponConversionWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledUponConversionWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="zi_RaananaIsraelOfficeSpaceMember" abstract="true" name="RaananaIsraelOfficeSpaceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_RevenueFromContractWithCustomerTermOfContract" abstract="false" name="RevenueFromContractWithCustomerTermOfContract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_BeginningOnFebruary12024Member" abstract="true" name="BeginningOnFebruary12024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_PreIPOAwardsMember" abstract="true" name="PreIPOAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_TrigerringEventsDomain" abstract="true" name="TrigerringEventsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_PrincipalAmountRedeemedOnFebruary12025Member" abstract="true" name="PrincipalAmountRedeemedOnFebruary12025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_TrigerringEventsAxis" abstract="true" name="TrigerringEventsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="zi_BenefitRetainedAsPercentOfNetCashSavings" abstract="false" name="BenefitRetainedAsPercentOfNetCashSavings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="zi_OfficeRelocationMember" abstract="true" name="OfficeRelocationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_EmployeeStockPurchasePlanMaximumNumberOfOfferingPeriodsPermitted" abstract="false" name="EmployeeStockPurchasePlanMaximumNumberOfOfferingPeriodsPermitted" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="zi_AccountingPoliciesTable" abstract="true" name="AccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="zi_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountThatMayBeRedeemed" abstract="false" name="DebtInstrumentRedemptionPricePercentageOfPrincipalAmountThatMayBeRedeemed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="zi_PerformanceBasedRestrictedStockUnitMember" abstract="true" name="PerformanceBasedRestrictedStockUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_AccruedSalesCommissionNoncurrent" abstract="false" name="AccruedSalesCommissionNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_OmnibusIncentivePlan2020Member" abstract="true" name="OmnibusIncentivePlan2020Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentBusinessCombinationAccrualsFromAdjustmentsToWorkingCapitalBalances" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentBusinessCombinationAccrualsFromAdjustmentsToWorkingCapitalBalances" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationConsiderationTransferredIncentiveCompensation" abstract="false" name="BusinessCombinationConsiderationTransferredIncentiveCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_InsentIncInsentMember" abstract="true" name="InsentIncInsentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_DerivativeAssetDerecognition" abstract="false" name="DerivativeAssetDerecognition" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationConsiderationTransferredConvertibleNoteReceivable" abstract="false" name="BusinessCombinationConsiderationTransferredConvertibleNoteReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_APICShareBasedCompensationIncreaseForCostOfRecognitionStockholdersEquityEffectOfReorganizationTransaction" abstract="false" name="APICShareBasedCompensationIncreaseForCostOfRecognitionStockholdersEquityEffectOfReorganizationTransaction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_PrincipalAmountRedeemedOnFebruary12026Member" abstract="true" name="PrincipalAmountRedeemedOnFebruary12026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_CapitalAllocatedForFutureDistribution" abstract="false" name="CapitalAllocatedForFutureDistribution" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationAccrualsFromAdjustmentsToTaxLiabilities" abstract="false" name="BusinessCombinationAccrualsFromAdjustmentsToTaxLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ImpairedLeaseRelatedAssets" abstract="false" name="ImpairedLeaseRelatedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_DebtInstrumentCovenantThresholdDrawsOnLineOfCreditToTriggerSpringingFinancialCovenant" abstract="false" name="DebtInstrumentCovenantThresholdDrawsOnLineOfCreditToTriggerSpringingFinancialCovenant" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPrepaidExpensesAndOtherAssets" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPrepaidExpensesAndOtherAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_PaymentProvidedAsPercentOfNetCashSavings" abstract="false" name="PaymentProvidedAsPercentOfNetCashSavings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="zi_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="zi_PriorToFebruary12024Member" abstract="true" name="PriorToFebruary12024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_OtherServiceMember" abstract="true" name="OtherServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_PaymentsToAcquireBusinessesGrossExcludingPurchaseConsiderationLiabilities" abstract="false" name="PaymentsToAcquireBusinessesGrossExcludingPurchaseConsiderationLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_LessorOperatingLeaseOptionToTerminateGainLossOnTermination" abstract="false" name="LessorOperatingLeaseOptionToTerminateGainLossOnTermination" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_PreAcquisitionBrandPortfolioMember" abstract="true" name="PreAcquisitionBrandPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_LesseeOperatingLeaseLeaseNotYetCommencedUndiscountedAmount" abstract="false" name="LesseeOperatingLeaseLeaseNotYetCommencedUndiscountedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_EmployeeStockPurchasePlanPurchasePeriodDuration" abstract="false" name="EmployeeStockPurchasePlanPurchasePeriodDuration" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_NoncashInvestingAndFinancingActivitiesDeferredVariableConsiderationFromBusinessAcquisition" abstract="false" name="NoncashInvestingAndFinancingActivitiesDeferredVariableConsiderationFromBusinessAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_LessorOperatingLeaseOptionToTerminateAmount" abstract="false" name="LessorOperatingLeaseOptionToTerminateAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_PostIPOAwardsMember" abstract="true" name="PostIPOAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_LeasesFromAcquisitionsMember" abstract="true" name="LeasesFromAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_NewCommonClassAMember" abstract="true" name="NewCommonClassAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_IncreaseDecreaseOperatingLeaseRightOfUseAsset" abstract="false" name="IncreaseDecreaseOperatingLeaseRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_TaxReceivableAgreementRemeasurement" abstract="false" name="TaxReceivableAgreementRemeasurement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ClassPUnitsMember" abstract="true" name="ClassPUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ThreePointEightSevenFivePercentSeniorNotesDue2029Member" abstract="true" name="ThreePointEightSevenFivePercentSeniorNotesDue2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_DeferredCostsAndOtherAssetsNetOfCurrentPortionMember" abstract="true" name="DeferredCostsAndOtherAssetsNetOfCurrentPortionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ZoomInfoOpCoMember" abstract="true" name="ZoomInfoOpCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_AccountingPoliciesLineItems" abstract="true" name="AccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="zi_OperatingLeaseRightOfUseAssetMember" abstract="true" name="OperatingLeaseRightOfUseAssetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_FirstLienTermLoanMember" abstract="true" name="FirstLienTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentReceivables" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_CashCashEquivalentsAndDebtSecuritiesAvailableForSaleAmortizedCost" abstract="false" name="CashCashEquivalentsAndDebtSecuritiesAvailableForSaleAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_DebtInstrumentCovenantLeverageRatioMaximum" abstract="false" name="DebtInstrumentCovenantLeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExchangedWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExchangedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="zi_HoldCoUnitsMember" abstract="true" name="HoldCoUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_IncrementalCommonSharesAttributableToDilutiveEffectOfConversionOfCommonStock" abstract="false" name="IncrementalCommonSharesAttributableToDilutiveEffectOfConversionOfCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="zi_NumberOfTaxReceivableAgreements" abstract="false" name="NumberOfTaxReceivableAgreements" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseToAuthorizedSharesBasedOnStockOutstandingPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseToAuthorizedSharesBasedOnStockOutstandingPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="zi_UndistributedEarningsDilutedIncreaseDecreaseInEarningsUponConversionOfPotentiallyDilutiveInstruments" abstract="false" name="UndistributedEarningsDilutedIncreaseDecreaseInEarningsUponConversionOfPotentiallyDilutiveInstruments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_AssetsLesseeAbstract" abstract="true" name="AssetsLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="zi_LiabilitiesLesseeAbstract" abstract="true" name="LiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentBusinessCombinationAccrualsFromAdjustmentsToTaxLiabilities" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingCompleteAdjustmentBusinessCombinationAccrualsFromAdjustmentsToTaxLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_CostOfGoodsAndServiceIncludingDepreciationAndExcludingAmortization" abstract="false" name="CostOfGoodsAndServiceIncludingDepreciationAndExcludingAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayable" abstract="false" name="BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfCommonStock" abstract="false" name="UndistributedEarningsDilutedReallocationOfEarningsUponConversionOfCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_OperatingLeaseTenantIncentiveReimbursement" abstract="false" name="OperatingLeaseTenantIncentiveReimbursement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_ShareBasedCompensationByShareBasedPaymentAwardPeriodToSettleAwards" abstract="false" name="ShareBasedCompensationByShareBasedPaymentAwardPeriodToSettleAwards" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_BusinessAcquisitionExpectedTaxRefund" abstract="false" name="BusinessAcquisitionExpectedTaxRefund" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_CashRefundFromAcquisition" abstract="false" name="CashRefundFromAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_A2021BusinessAcquisitionsMember" abstract="true" name="A2021BusinessAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_RingLeadIncRingLeadMember" abstract="true" name="RingLeadIncRingLeadMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_PaidAndAccruedReversalOfTaxDistributions" abstract="false" name="PaidAndAccruedReversalOfTaxDistributions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_HSKBIIClass1UnitsMember" abstract="true" name="HSKBIIClass1UnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ZoomInfoHoldCoMember" abstract="true" name="ZoomInfoHoldCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_TaxReceivableAgreementCashSavingsRealizedPercentage" abstract="false" name="TaxReceivableAgreementCashSavingsRealizedPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
</xs:schema>
