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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:b5fc14ef-097b-4c72-aac3-2fabb1e2cdcb,g:fc6adb8e-a64b-4ba9-b118-538c34884f31-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:zi="http://www.zoominfo.com/20240630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.zoominfo.com/20240630">
  <xs:import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2024" schemaLocation="https://xbrl.sec.gov/country/2024/country-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.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-20240630_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-20240630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" 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-20240630_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-20240630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" 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="ConsolidatedBalanceSheets" roleURI="http://www.zoominfo.com/role/ConsolidatedBalanceSheets">
        <link:definition>9952151 - Statement - 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="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.zoominfo.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>9952152 - Statement - 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>9952153 - 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>9952154 - 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>9952155 - 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="ConsolidatedStatementsofChangesinEquity" roleURI="http://www.zoominfo.com/role/ConsolidatedStatementsofChangesinEquity">
        <link:definition>9952156 - Statement - Consolidated Statements of Changes in Equity</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>9952157 - 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="BusinessBasisofPresentationandSummaryofSignificantAccountingPolicies" roleURI="http://www.zoominfo.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPolicies">
        <link:definition>9952158 - Disclosure - Business, 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>9952159 - 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="CashCashEquivalentsandShorttermInvestments" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestments">
        <link:definition>9952160 - 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>9952161 - 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>9952162 - 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>9952163 - 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>9952164 - 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>9952165 - 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="CommitmentsandContingencies" roleURI="http://www.zoominfo.com/role/CommitmentsandContingencies">
        <link:definition>9952166 - Disclosure - Commitments 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="EarningsLossPerShare" roleURI="http://www.zoominfo.com/role/EarningsLossPerShare">
        <link:definition>9952167 - Disclosure - Earnings (Loss) 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>9952168 - 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>9952169 - 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>9952170 - 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>9952171 - 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="SubsequentEvents" roleURI="http://www.zoominfo.com/role/SubsequentEvents">
        <link:definition>9952172 - Disclosure - Subsequent Events</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="BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.zoominfo.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9954471 - Disclosure - Business, 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>9954472 - 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="CashCashEquivalentsandShorttermInvestmentsTables" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestmentsTables">
        <link:definition>9954473 - 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>9954474 - 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>9954475 - 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>9954476 - 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>9954477 - 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>9954478 - 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="EarningsLossPerShareTables" roleURI="http://www.zoominfo.com/role/EarningsLossPerShareTables">
        <link:definition>9954479 - Disclosure - Earnings (Loss) 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>9954480 - 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>9954481 - 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="BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesDetails" roleURI="http://www.zoominfo.com/role/BusinessBasisofPresentationandSummaryofSignificantAccountingPoliciesDetails">
        <link:definition>9954482 - Disclosure - Business, 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>9954483 - 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>9954484 - 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>9954485 - 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>9954485 - 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="CashCashEquivalentsandShorttermInvestmentsComponentsDetails" roleURI="http://www.zoominfo.com/role/CashCashEquivalentsandShorttermInvestmentsComponentsDetails">
        <link:definition>9954486 - 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>9954486 - 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>9954487 - 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>9954488 - 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>9954489 - 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="GoodwillandAcquiredIntangibleAssetsNarrativeDetails" roleURI="http://www.zoominfo.com/role/GoodwillandAcquiredIntangibleAssetsNarrativeDetails">
        <link:definition>9954490 - Disclosure - Goodwill and Acquired Intangible Assets - 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="FinancingArrangementsCarryingValuesofBorrowingsDetails" roleURI="http://www.zoominfo.com/role/FinancingArrangementsCarryingValuesofBorrowingsDetails">
        <link:definition>9954491 - 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>9954492 - 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="DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesOutstandingInterestRateDerivativesDesignatedasCashFlowHedgesofInterestRateRiskDetails">
        <link:definition>9954493 - 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="DerivativesandHedgingActivitiesNarrativeDetails" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesNarrativeDetails">
        <link:definition>9954494 - 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="DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails" roleURI="http://www.zoominfo.com/role/DerivativesandHedgingActivitiesFairValueandPresentationintheConsolidatedBalanceSheetsforDerivativesDetails">
        <link:definition>9954495 - 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="FairValueNarrativeDetails" roleURI="http://www.zoominfo.com/role/FairValueNarrativeDetails">
        <link:definition>9954496 - Disclosure - Fair Value - 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="FairValueFinancialAssetsDetails" roleURI="http://www.zoominfo.com/role/FairValueFinancialAssetsDetails">
        <link:definition>9954497 - Disclosure - Fair Value - Financial 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="CommitmentsandContingenciesDetails" roleURI="http://www.zoominfo.com/role/CommitmentsandContingenciesDetails">
        <link:definition>9954498 - Disclosure - Commitments 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="EarningsLossPerShareBasicandDilutedNetIncomePerShareDetails" roleURI="http://www.zoominfo.com/role/EarningsLossPerShareBasicandDilutedNetIncomePerShareDetails">
        <link:definition>9954499 - Disclosure - Earnings (Loss) Per Share - Basic and Diluted Net Income 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="EarningsLossPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetIncomePerShareDetails" roleURI="http://www.zoominfo.com/role/EarningsLossPerSharePotentialCommonStockEquivalentsExcludedfromCalculationofDilutedNetIncomePerShareDetails">
        <link:definition>9954500 - Disclosure - Earnings (Loss) Per Share - Potential Common Stock Equivalents Excluded from Calculation of Diluted Net Income 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>9954501 - 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>9954502 - 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>9954503 - 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>9954504 - 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>9954504 - 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>9954505 - 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="EquitybasedCompensationMarketBasedRSUsDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationMarketBasedRSUsDetails">
        <link:definition>9954506 - Disclosure - Equity-based Compensation, Market Based RSU's (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>9954507 - 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="EquitybasedCompensationCommonStockOptionsActivityDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationCommonStockOptionsActivityDetails">
        <link:definition>9954508 - Disclosure - Equity-based Compensation - 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="EquitybasedCompensationFairValueofESPPPurchaseBlackScholesDetails" roleURI="http://www.zoominfo.com/role/EquitybasedCompensationFairValueofESPPPurchaseBlackScholesDetails">
        <link:definition>9954509 - Disclosure - Equity-based Compensation - Fair Value of ESPP Purchase Black-Scholes (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>9954510 - 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>9954511 - 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>9954512 - 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>
      <link:roleType id="SubsequentEventsDetails" roleURI="http://www.zoominfo.com/role/SubsequentEventsDetails">
        <link:definition>9954513 - Disclosure - Subsequent Events (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_A3875SeniorNotesMember" abstract="true" name="A3875SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_RaananaIsraelMember" abstract="true" name="RaananaIsraelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_PaymentProvidedAsPercentOfNetCashSavings" abstract="false" name="PaymentProvidedAsPercentOfNetCashSavings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="zi_FirstLienTermLoanMaturingFebruary2028Member" abstract="true" name="FirstLienTermLoanMaturingFebruary2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_CashCashEquivalentsAndDebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTax" abstract="false" name="CashCashEquivalentsAndDebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedLossBeforeTax" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_TimeBasedRestrictedStockMember" abstract="true" name="TimeBasedRestrictedStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_BenefitRetainedAsPercentOfNetCashSavings" abstract="false" name="BenefitRetainedAsPercentOfNetCashSavings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="zi_TaxReceivableAgreementLiabilityNoncurrent" abstract="false" name="TaxReceivableAgreementLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_NewAndExistingLeaseAgreementsMember" abstract="true" name="NewAndExistingLeaseAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_LiabilitiesLesseeAbstract" abstract="true" name="LiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="zi_ShareBasedPaymentArrangementTrancheFourMember" abstract="true" name="ShareBasedPaymentArrangementTrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_DebtInstrumentCovenantLeverageRatioMaximum" abstract="false" name="DebtInstrumentCovenantLeverageRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="zi_VancouverWashingtonMember" abstract="true" name="VancouverWashingtonMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_AliDasdanMember" abstract="true" name="AliDasdanMember" 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_RevenueFromContractWithCustomerTermOfContract" abstract="false" name="RevenueFromContractWithCustomerTermOfContract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_BrandPortfolioMember" abstract="true" name="BrandPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_PhantomUnitsMember" abstract="true" name="PhantomUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardTargetStockPrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTargetStockPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="zi_TaxReceivableAgreementsPolicyPolicyTextBlock" abstract="false" name="TaxReceivableAgreementsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="zi_LesseeOperatingLeaseLiabilityToBePaidRemainderOfFiscalYearNet" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidRemainderOfFiscalYearNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_DebtInstrumentPeriodicPaymentPercentageOfPrincipal" abstract="false" name="DebtInstrumentPeriodicPaymentPercentageOfPrincipal" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="zi_NumberOfTaxReceivableAgreements" abstract="false" name="NumberOfTaxReceivableAgreements" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="zi_DebtInstrumentCreditSpreadAdjustment" abstract="false" name="DebtInstrumentCreditSpreadAdjustment" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="zi_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseToAuthorizedSharesBasedOnStockOutstandingPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreaseToAuthorizedSharesBasedOnStockOutstandingPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="zi_FirstLienTermLoanMember" abstract="true" name="FirstLienTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1: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_TaxReceivableAgreementLiabilityCurrent" abstract="false" name="TaxReceivableAgreementLiabilityCurrent" nillable="true" xbrli:periodType="instant" 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-types1:domainItemType"/>
  <xs:element id="zi_DogpatchAdvisorsLLCMember" abstract="true" name="DogpatchAdvisorsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="zi_WalthamMassachusettsMember" abstract="true" name="WalthamMassachusettsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_MarketBasedRestrictedStockUnitsMember" abstract="true" name="MarketBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_TaxReceivableAgreementRemeasurement" abstract="false" name="TaxReceivableAgreementRemeasurement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_DeferredCostsAndOtherAssetsNetOfCurrentPortionMember" abstract="true" name="DeferredCostsAndOtherAssetsNetOfCurrentPortionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_EmployeeStockPurchasePlanPurchasePeriodDuration" abstract="false" name="EmployeeStockPurchasePlanPurchasePeriodDuration" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_CashCashEquivalentsAndDebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTax" abstract="false" name="CashCashEquivalentsAndDebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainBeforeTax" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_CommencingInNextNineMonthsMember" abstract="true" name="CommencingInNextNineMonthsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_FirstLienTermLoanMaturingNovember2025Member" abstract="true" name="FirstLienTermLoanMaturingNovember2025Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_RaananaWalthamVancouverAndGrandRapidsOfficeMember" abstract="true" name="RaananaWalthamVancouverAndGrandRapidsOfficeMember" 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-types1:domainItemType"/>
  <xs:element id="zi_TaxReceivableAgreementsDisclosureTextBlock" abstract="false" name="TaxReceivableAgreementsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="zi_PreAcquisitionBrandPortfolioMember" abstract="true" name="PreAcquisitionBrandPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_CommencingInNextThreeMonthsMember" abstract="true" name="CommencingInNextThreeMonthsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ServiceVestingConditionOneMember" abstract="true" name="ServiceVestingConditionOneMember" 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-types1:domainItemType"/>
  <xs:element id="zi_OperatingIncomeLossNetOfTax" abstract="false" name="OperatingIncomeLossNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_OperatingLeaseRightOfUseAssetLeaseAbandonmentCharge" abstract="false" name="OperatingLeaseRightOfUseAssetLeaseAbandonmentCharge" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_MarketBasedRSUsMember" abstract="true" name="MarketBasedRSUsMember" 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-types1:domainItemType"/>
  <xs:element id="zi_LessorOperatingLeaseRemainingSubleaseTerm" abstract="false" name="LessorOperatingLeaseRemainingSubleaseTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="zi_DerivativeNotionalAmountSettled" abstract="false" name="DerivativeNotionalAmountSettled" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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-types1:domainItemType"/>
  <xs:element id="zi_CashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax" abstract="false" name="CashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_AmortizationOfOtherIntangibleAssets" abstract="false" name="AmortizationOfOtherIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_LesseeOperatingLeaseNumberOfOfficesSubleased" abstract="false" name="LesseeOperatingLeaseNumberOfOfficesSubleased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="zi_TaxReceivableAgreementsAbstract" abstract="true" name="TaxReceivableAgreementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="zi_CashEquivalentsAmortizedCost" abstract="false" name="CashEquivalentsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_UnitedStatesAndIsraelMember" abstract="true" name="UnitedStatesAndIsraelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_TaxReceivableAgreementLiability" abstract="false" name="TaxReceivableAgreementLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_IncreaseDecreaseInPrepaidExpenseAndOtherAssetsCurrent" abstract="false" name="IncreaseDecreaseInPrepaidExpenseAndOtherAssetsCurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_OtherComprehensiveIncomeLossCashFlowHedgeEffectOfDeDesignationOfHedgeBeforeTax" abstract="false" name="OtherComprehensiveIncomeLossCashFlowHedgeEffectOfDeDesignationOfHedgeBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ShareBasedPaymentArrangementAnnualTrancheMember" abstract="true" name="ShareBasedPaymentArrangementAnnualTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_BusinessCombinationContingentConsiderationEquityAmountPaid" abstract="false" name="BusinessCombinationContingentConsiderationEquityAmountPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" 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_AssetsLesseeAbstract" abstract="true" name="AssetsLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_WalthamMassachusettsSecondPhaseMember" abstract="true" name="WalthamMassachusettsSecondPhaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_ServiceVestingConditionTwoMember" abstract="true" name="ServiceVestingConditionTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="zi_PerformanceBasedRestrictedStockUnitsMember" abstract="true" name="PerformanceBasedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_EmailVerificationServiceMember" abstract="true" name="EmailVerificationServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="zi_LitigationSettlementAmountAwardedToOtherPartyAsAPercentageOfStatutoryDamages" abstract="false" name="LitigationSettlementAmountAwardedToOtherPartyAsAPercentageOfStatutoryDamages" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="zi_CashAndCashEquivalentsUnrealizedGains" abstract="false" name="CashAndCashEquivalentsUnrealizedGains" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_CashAndCashEquivalentsAmortizedCost" abstract="false" name="CashAndCashEquivalentsAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="zi_PerformanceBasedRestrictedStockUnitMember" abstract="true" name="PerformanceBasedRestrictedStockUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
