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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2022 Workiva-->
<!--r:3cdb66b4-43c9-4e31-9d14-c436174d782a,g:7af30c1f-435e-4416-b2cc-4660f25ba056-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:bgcp="http://www.bgcpartners.com/20220630" 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.bgcpartners.com/20220630">
  <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/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-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="bgcp-20220630_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="bgcp-20220630_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="bgcp-20220630_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="bgcp-20220630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://www.bgcpartners.com/role/Cover">
        <link:definition>000010001 - Document - Cover</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="CondensedConsolidatedStatementsofFinancialCondition" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofFinancialCondition">
        <link:definition>100010002 - Statement - Condensed Consolidated Statements of Financial Condition</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="CondensedConsolidatedStatementsofFinancialConditionParenthetical" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofFinancialConditionParenthetical">
        <link:definition>100020003 - Statement - Condensed Consolidated Statements of Financial Condition (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="CondensedConsolidatedStatementsofOperations" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofOperations">
        <link:definition>100030004 - Statement - Condensed 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="CondensedConsolidatedStatementsofComprehensiveIncomeLoss" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeLoss">
        <link:definition>100040005 - Statement - Condensed 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="CondensedConsolidatedStatementsofCashFlows" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofCashFlows">
        <link:definition>100050006 - Statement - Condensed 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="CondensedConsolidatedStatementsofChangesinEquity" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofChangesinEquity">
        <link:definition>100060007 - Statement - Condensed 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="CondensedConsolidatedStatementsofChangesinEquityParenthetical" roleURI="http://www.bgcpartners.com/role/CondensedConsolidatedStatementsofChangesinEquityParenthetical">
        <link:definition>100070008 - Statement - Condensed Consolidated Statements of Changes in Equity (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="OrganizationandBasisofPresentation" roleURI="http://www.bgcpartners.com/role/OrganizationandBasisofPresentation">
        <link:definition>210011001 - Disclosure - Organization and Basis of Presentation</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="OrganizationandBasisofPresentationPolicies" roleURI="http://www.bgcpartners.com/role/OrganizationandBasisofPresentationPolicies">
        <link:definition>220022001 - Disclosure - Organization and Basis of Presentation (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="OrganizationandBasisofPresentationTables" roleURI="http://www.bgcpartners.com/role/OrganizationandBasisofPresentationTables">
        <link:definition>230033001 - Disclosure - Organization and Basis of Presentation (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="OrganizationandBasisofPresentationAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/OrganizationandBasisofPresentationAdditionalInformationDetail">
        <link:definition>240044001 - Disclosure - Organization and Basis of Presentation - Additional Information (Detail)</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="OrganizationandBasisofPresentationBusinessAcquisitionScheduleofRetrospectiveAdjustmentDetails" roleURI="http://www.bgcpartners.com/role/OrganizationandBasisofPresentationBusinessAcquisitionScheduleofRetrospectiveAdjustmentDetails">
        <link:definition>240054002 - Disclosure - Organization and Basis of Presentation - Business Acquisition, Schedule of Retrospective Adjustment (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="LimitedPartnershipInterestsinBGCHoldingsandNewmarkHoldings" roleURI="http://www.bgcpartners.com/role/LimitedPartnershipInterestsinBGCHoldingsandNewmarkHoldings">
        <link:definition>210061002 - Disclosure - Limited Partnership Interests in BGC Holdings and Newmark Holdings</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="LimitedPartnershipInterestsinBGCHoldingsandNewmarkHoldingsAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/LimitedPartnershipInterestsinBGCHoldingsandNewmarkHoldingsAdditionalInformationDetail">
        <link:definition>240074003 - Disclosure - Limited Partnership Interests in BGC Holdings and Newmark Holdings - Additional Information (Detail)</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="SummaryofSignificantAccountingPolicies" roleURI="http://www.bgcpartners.com/role/SummaryofSignificantAccountingPolicies">
        <link:definition>210081003 - Disclosure - 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="Acquisitions" roleURI="http://www.bgcpartners.com/role/Acquisitions">
        <link:definition>210091004 - Disclosure - Acquisitions</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="AcquisitionsAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/AcquisitionsAdditionalInformationDetail">
        <link:definition>240104004 - Disclosure - Acquisitions - Additional Information (Detail)</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="Divestitures" roleURI="http://www.bgcpartners.com/role/Divestitures">
        <link:definition>210111005 - Disclosure - Divestitures</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="DivestituresDetail" roleURI="http://www.bgcpartners.com/role/DivestituresDetail">
        <link:definition>240124005 - Disclosure - Divestitures (Detail)</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.bgcpartners.com/role/EarningsPerShare">
        <link:definition>210131006 - 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="EarningsPerShareTables" roleURI="http://www.bgcpartners.com/role/EarningsPerShareTables">
        <link:definition>230143002 - 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="EarningsPerShareCalculationofBasicEarningsPerShareDetail" roleURI="http://www.bgcpartners.com/role/EarningsPerShareCalculationofBasicEarningsPerShareDetail">
        <link:definition>240154006 - Disclosure - Earnings Per Share - Calculation of Basic Earnings Per Share (Detail)</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="EarningsPerShareCalculationofFullyDilutedEarningsPerShareDetail" roleURI="http://www.bgcpartners.com/role/EarningsPerShareCalculationofFullyDilutedEarningsPerShareDetail">
        <link:definition>240164007 - Disclosure - Earnings Per Share - Calculation of Fully Diluted Earnings Per Share (Detail)</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="EarningsPerShareAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/EarningsPerShareAdditionalInformationDetail">
        <link:definition>240174008 - Disclosure - Earnings Per Share - Additional Information (Detail)</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="StockTransactionsandUnitRedemptions" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptions">
        <link:definition>210181007 - Disclosure - Stock Transactions and Unit Redemptions</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="StockTransactionsandUnitRedemptionsTables" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsTables">
        <link:definition>230193003 - Disclosure - Stock Transactions and Unit Redemptions (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="StockTransactionsandUnitRedemptionsChangesinSharesofClassACommonStockOutstandingDetail" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsChangesinSharesofClassACommonStockOutstandingDetail">
        <link:definition>240204009 - Disclosure - Stock Transactions and Unit Redemptions - Changes in Shares of Class A Common Stock Outstanding (Detail)</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="StockTransactionsandUnitRedemptionsChangesinSharesofClassACommonStockOutstandingTableFootnoteDetail" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsChangesinSharesofClassACommonStockOutstandingTableFootnoteDetail">
        <link:definition>240214010 - Disclosure - Stock Transactions and Unit Redemptions - Changes in Shares of Class A Common Stock Outstanding Table Footnote (Detail)</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="StockTransactionsandUnitRedemptionsAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsAdditionalInformationDetail">
        <link:definition>240224011 - Disclosure - Stock Transactions and Unit Redemptions - Additional Information (Detail)</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="StockTransactionsandUnitRedemptionsGrossUnitRedemptionsandShareRepurchasesofClassACommonStockDetail" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsGrossUnitRedemptionsandShareRepurchasesofClassACommonStockDetail">
        <link:definition>240234012 - Disclosure - Stock Transactions and Unit Redemptions - Gross Unit Redemptions and Share Repurchases of Class A Common Stock (Detail)</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="StockTransactionsandUnitRedemptionsGrossUnitRedemptionsandShareRepurchasesofClassACommonStockTableFootnoteDetail" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsGrossUnitRedemptionsandShareRepurchasesofClassACommonStockTableFootnoteDetail">
        <link:definition>240244013 - Disclosure - Stock Transactions and Unit Redemptions - Gross Unit Redemptions and Share Repurchases of Class A Common Stock Table Footnote (Detail)</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="StockTransactionsandUnitRedemptionsSummaryofChangesinCarryingAmountofFPUsDetail" roleURI="http://www.bgcpartners.com/role/StockTransactionsandUnitRedemptionsSummaryofChangesinCarryingAmountofFPUsDetail">
        <link:definition>240254014 - Disclosure - Stock Transactions and Unit Redemptions - Summary of Changes in Carrying Amount of FPUs (Detail)</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="SecuritiesOwned" roleURI="http://www.bgcpartners.com/role/SecuritiesOwned">
        <link:definition>210261008 - Disclosure - Securities Owned</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="SecuritiesOwnedAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/SecuritiesOwnedAdditionalInformationDetail">
        <link:definition>240274015 - Disclosure - Securities Owned - Additional Information (Detail)</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="CollateralizedTransactions" roleURI="http://www.bgcpartners.com/role/CollateralizedTransactions">
        <link:definition>210281009 - Disclosure - Collateralized Transactions</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="CollateralizedTransactionsDetail" roleURI="http://www.bgcpartners.com/role/CollateralizedTransactionsDetail">
        <link:definition>240294016 - Disclosure - Collateralized Transactions (Detail)</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="MarketableSecurities" roleURI="http://www.bgcpartners.com/role/MarketableSecurities">
        <link:definition>210301010 - Disclosure - Marketable Securities</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="MarketableSecuritiesDetail" roleURI="http://www.bgcpartners.com/role/MarketableSecuritiesDetail">
        <link:definition>240314017 - Disclosure - Marketable Securities (Detail)</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="ReceivablesfromandPayablestoBrokerDealersClearingOrganizationsCustomersandRelatedBrokerDealers" roleURI="http://www.bgcpartners.com/role/ReceivablesfromandPayablestoBrokerDealersClearingOrganizationsCustomersandRelatedBrokerDealers">
        <link:definition>210321011 - Disclosure - Receivables from and Payables to Broker-Dealers, Clearing Organizations, Customers and Related Broker-Dealers</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="ReceivablesfromandPayablestoBrokerDealersClearingOrganizationsCustomersandRelatedBrokerDealersTables" roleURI="http://www.bgcpartners.com/role/ReceivablesfromandPayablestoBrokerDealersClearingOrganizationsCustomersandRelatedBrokerDealersTables">
        <link:definition>230333004 - Disclosure - Receivables from and Payables to Broker-Dealers, Clearing Organizations, Customers and Related Broker-Dealers (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="ReceivablesfromandPayablestoBrokerDealersClearingOrganizationsCustomersandRelatedBrokerDealersDetail" roleURI="http://www.bgcpartners.com/role/ReceivablesfromandPayablestoBrokerDealersClearingOrganizationsCustomersandRelatedBrokerDealersDetail">
        <link:definition>240344018 - Disclosure - Receivables from and Payables to Broker-Dealers, Clearing Organizations, Customers and Related Broker-Dealers (Detail)</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="Derivatives" roleURI="http://www.bgcpartners.com/role/Derivatives">
        <link:definition>210351012 - Disclosure - Derivatives</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="DerivativesTables" roleURI="http://www.bgcpartners.com/role/DerivativesTables">
        <link:definition>230363005 - Disclosure - Derivatives (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="DerivativesFairValueofDerivativeContractsDetail" roleURI="http://www.bgcpartners.com/role/DerivativesFairValueofDerivativeContractsDetail">
        <link:definition>240374019 - Disclosure - Derivatives - Fair Value of Derivative Contracts (Detail)</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="DerivativesAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/DerivativesAdditionalInformationDetail">
        <link:definition>240384020 - Disclosure - Derivatives - Additional Information (Detail)</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="DerivativesOffsettingofDerivativeInstrumentsDetail" roleURI="http://www.bgcpartners.com/role/DerivativesOffsettingofDerivativeInstrumentsDetail">
        <link:definition>240394021 - Disclosure - Derivatives - Offsetting of Derivative Instruments (Detail)</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="DerivativesSummaryofGainsandLossesonDerivativeContractsDetail" roleURI="http://www.bgcpartners.com/role/DerivativesSummaryofGainsandLossesonDerivativeContractsDetail">
        <link:definition>240404022 - Disclosure - Derivatives - Summary of Gains and (Losses) on Derivative Contracts (Detail)</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="FairValueofFinancialAssetsandLiabilities" roleURI="http://www.bgcpartners.com/role/FairValueofFinancialAssetsandLiabilities">
        <link:definition>210411013 - Disclosure - Fair Value of Financial Assets and Liabilities</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="FairValueofFinancialAssetsandLiabilitiesTables" roleURI="http://www.bgcpartners.com/role/FairValueofFinancialAssetsandLiabilitiesTables">
        <link:definition>230423006 - Disclosure - Fair Value of Financial Assets and Liabilities (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="FairValueofFinancialAssetsandLiabilitiesFairValueHierarchyofFinancialAssetsandLiabilitiesunderUSGAAPGuidanceDetail" roleURI="http://www.bgcpartners.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueHierarchyofFinancialAssetsandLiabilitiesunderUSGAAPGuidanceDetail">
        <link:definition>240434023 - Disclosure - Fair Value of Financial Assets and Liabilities - Fair Value Hierarchy of Financial Assets and Liabilities under U.S. GAAP Guidance (Detail)</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="FairValueofFinancialAssetsandLiabilitiesChangesinLevel3LiabilitiesMeasuredatFairValueonRecurringBasisDetail" roleURI="http://www.bgcpartners.com/role/FairValueofFinancialAssetsandLiabilitiesChangesinLevel3LiabilitiesMeasuredatFairValueonRecurringBasisDetail">
        <link:definition>240444024 - Disclosure - Fair Value of Financial Assets and Liabilities - Changes in Level 3 Liabilities Measured at Fair Value on Recurring Basis (Detail)</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="FairValueofFinancialAssetsandLiabilitiesQuantitativeInformationaboutLevel3FairValueMeasurementsonRecurringBasisDetail" roleURI="http://www.bgcpartners.com/role/FairValueofFinancialAssetsandLiabilitiesQuantitativeInformationaboutLevel3FairValueMeasurementsonRecurringBasisDetail">
        <link:definition>240454025 - Disclosure - Fair Value of Financial Assets and Liabilities - Quantitative Information about Level 3 Fair Value Measurements on Recurring Basis (Detail)</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="FairValueofFinancialAssetsandLiabilitiesAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/FairValueofFinancialAssetsandLiabilitiesAdditionalInformationDetail">
        <link:definition>240464026 - Disclosure - Fair Value of Financial Assets and Liabilities - Additional Information (Detail)</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="RelatedPartyTransactions" roleURI="http://www.bgcpartners.com/role/RelatedPartyTransactions">
        <link:definition>210471014 - Disclosure - Related Party Transactions</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="RelatedPartyTransactionsAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/RelatedPartyTransactionsAdditionalInformationDetail">
        <link:definition>240484027 - Disclosure - Related Party Transactions - Additional Information (Detail)</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="Investments" roleURI="http://www.bgcpartners.com/role/Investments">
        <link:definition>210491015 - Disclosure - 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="InvestmentsTables" roleURI="http://www.bgcpartners.com/role/InvestmentsTables">
        <link:definition>230503007 - Disclosure - 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="InvestmentsAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/InvestmentsAdditionalInformationDetail">
        <link:definition>240514028 - Disclosure - Investments - Additional Information (Detail)</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="InvestmentsInvestmentsinVariableInterestEntitiesDetail" roleURI="http://www.bgcpartners.com/role/InvestmentsInvestmentsinVariableInterestEntitiesDetail">
        <link:definition>240524029 - Disclosure - Investments - Investments in Variable Interest Entities (Detail)</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="InvestmentsInvestmentsinVariableInterestEntitiesTableFootnoteDetail" roleURI="http://www.bgcpartners.com/role/InvestmentsInvestmentsinVariableInterestEntitiesTableFootnoteDetail">
        <link:definition>240534030 - Disclosure - Investments - Investments in Variable Interest Entities Table Footnote (Detail)</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="FixedAssetsNet" roleURI="http://www.bgcpartners.com/role/FixedAssetsNet">
        <link:definition>210541016 - Disclosure - Fixed Assets, Net</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="FixedAssetsNetTables" roleURI="http://www.bgcpartners.com/role/FixedAssetsNetTables">
        <link:definition>230553008 - Disclosure - Fixed Assets, Net (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="FixedAssetsNetComponentsofFixedAssetsNetDetail" roleURI="http://www.bgcpartners.com/role/FixedAssetsNetComponentsofFixedAssetsNetDetail">
        <link:definition>240564031 - Disclosure - Fixed Assets, Net - Components of Fixed Assets, Net (Detail)</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="FixedAssetsNetAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/FixedAssetsNetAdditionalInformationDetail">
        <link:definition>240574032 - Disclosure - Fixed Assets, Net - Additional Information (Detail)</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="GoodwillandOtherIntangibleAssetsNet" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNet">
        <link:definition>210581017 - Disclosure - Goodwill and Other Intangible Assets, Net</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="GoodwillandOtherIntangibleAssetsNetTables" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNetTables">
        <link:definition>230593009 - Disclosure - Goodwill and Other Intangible Assets, Net (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="GoodwillandOtherIntangibleAssetsNetSummaryofChangesinCarryingAmountofGoodwillDetail" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNetSummaryofChangesinCarryingAmountofGoodwillDetail">
        <link:definition>240604033 - Disclosure - Goodwill and Other Intangible Assets, Net - Summary of Changes in Carrying Amount of Goodwill (Detail)</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="GoodwillandOtherIntangibleAssetsNetComponentsofOtherIntangibleAssetsDetail" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNetComponentsofOtherIntangibleAssetsDetail">
        <link:definition>240614034 - Disclosure - Goodwill and Other Intangible Assets, Net - Components of Other Intangible Assets (Detail)</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="GoodwillandOtherIntangibleAssetsNetComponentsofOtherIntangibleAssetsDetail_1" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNetComponentsofOtherIntangibleAssetsDetail_1">
        <link:definition>240614034 - Disclosure - Goodwill and Other Intangible Assets, Net - Components of Other Intangible Assets (Detail)</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="GoodwillandOtherIntangibleAssetsNetAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNetAdditionalInformationDetail">
        <link:definition>240624035 - Disclosure - Goodwill and Other Intangible Assets, Net - Additional Information (Detail)</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="GoodwillandOtherIntangibleAssetsNetEstimatedFutureAmortizationExpenseofDefiniteLifeIntangibleAssetsDetail" roleURI="http://www.bgcpartners.com/role/GoodwillandOtherIntangibleAssetsNetEstimatedFutureAmortizationExpenseofDefiniteLifeIntangibleAssetsDetail">
        <link:definition>240634036 - Disclosure - Goodwill and Other Intangible Assets, Net - Estimated Future Amortization Expense of Definite Life Intangible Assets (Detail)</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="NotesPayableOtherandShortTermBorrowings" roleURI="http://www.bgcpartners.com/role/NotesPayableOtherandShortTermBorrowings">
        <link:definition>210641018 - Disclosure - Notes Payable, Other and Short-Term Borrowings</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="NotesPayableOtherandShortTermBorrowingsTables" roleURI="http://www.bgcpartners.com/role/NotesPayableOtherandShortTermBorrowingsTables">
        <link:definition>230653010 - Disclosure - Notes Payable, Other and Short-Term Borrowings (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="NotesPayableOtherandShortTermBorrowingsSummaryNotesPayableOtherandShorttermBorrowingsDetail" roleURI="http://www.bgcpartners.com/role/NotesPayableOtherandShortTermBorrowingsSummaryNotesPayableOtherandShorttermBorrowingsDetail">
        <link:definition>240664037 - Disclosure - Notes Payable, Other and Short-Term Borrowings - Summary Notes Payable, Other and Short-term Borrowings (Detail)</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="NotesPayableOtherandShortTermBorrowingsAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/NotesPayableOtherandShortTermBorrowingsAdditionalInformationDetail">
        <link:definition>240674038 - Disclosure - Notes Payable, Other and Short-Term Borrowings - Additional Information (Detail)</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="NotesPayableOtherandShortTermBorrowingsCarryingAmountsandEstimatedFairValuesofCompanysSeniorNotesDetail" roleURI="http://www.bgcpartners.com/role/NotesPayableOtherandShortTermBorrowingsCarryingAmountsandEstimatedFairValuesofCompanysSeniorNotesDetail">
        <link:definition>240684039 - Disclosure - Notes Payable, Other and Short-Term Borrowings - Carrying Amounts and Estimated Fair Values of Company's Senior Notes (Detail)</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="Compensation" roleURI="http://www.bgcpartners.com/role/Compensation">
        <link:definition>210691019 - Disclosure - 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="CompensationTables" roleURI="http://www.bgcpartners.com/role/CompensationTables">
        <link:definition>230703011 - Disclosure - 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="CompensationAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/CompensationAdditionalInformationDetail">
        <link:definition>240714040 - Disclosure - Compensation - Additional Information (Detail)</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="CompensationCompensationExpenseRelatedtoClassACommonStockDetail" roleURI="http://www.bgcpartners.com/role/CompensationCompensationExpenseRelatedtoClassACommonStockDetail">
        <link:definition>240724041 - Disclosure - Compensation - Compensation Expense Related to Class A Common Stock (Detail)</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="CompensationActivityAssociatedwithLPUsHeldbyBGCEmployeesDetail" roleURI="http://www.bgcpartners.com/role/CompensationActivityAssociatedwithLPUsHeldbyBGCEmployeesDetail">
        <link:definition>240734042 - Disclosure - Compensation - Activity Associated with LPU's Held by BGC Employees (Detail)</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="CompensationSummaryoftheBGCHoldingsandNewmarkHoldingsLPUsheldbyBGCEmployeesDetail" roleURI="http://www.bgcpartners.com/role/CompensationSummaryoftheBGCHoldingsandNewmarkHoldingsLPUsheldbyBGCEmployeesDetail">
        <link:definition>240744043 - Disclosure - Compensation - Summary of the BGC Holdings and Newmark Holdings LPUs held by BGC Employees (Detail)</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="CompensationCompensationExpenseRelatedtoIssuanceofBGCorNewmarkClassACommonStockandGrantsofExchangeabilityonBGCHoldingsandNewmarkHoldingsLPUsheldbyBGCEmployeesDetail" roleURI="http://www.bgcpartners.com/role/CompensationCompensationExpenseRelatedtoIssuanceofBGCorNewmarkClassACommonStockandGrantsofExchangeabilityonBGCHoldingsandNewmarkHoldingsLPUsheldbyBGCEmployeesDetail">
        <link:definition>240754044 - Disclosure - Compensation - Compensation Expense Related to Issuance of BGC or Newmark Class A Common Stock and Grants of Exchangeability on BGC Holdings and Newmark Holdings LPUs held by BGC Employees (Detail)</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="CompensationActivityAssociatedwithLimitedPartnershipUnitsAwardedtoBGCEmployeesDetail" roleURI="http://www.bgcpartners.com/role/CompensationActivityAssociatedwithLimitedPartnershipUnitsAwardedtoBGCEmployeesDetail">
        <link:definition>240764045 - Disclosure - Compensation - Activity Associated with Limited Partnership Units Awarded to BGC Employees (Detail)</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="CompensationSummaryofCompensationExpenseRelatedtoAmortizationofLPUsHeldbyBGCEmployeesDetail" roleURI="http://www.bgcpartners.com/role/CompensationSummaryofCompensationExpenseRelatedtoAmortizationofLPUsHeldbyBGCEmployeesDetail">
        <link:definition>240774046 - Disclosure - Compensation - Summary of Compensation Expense Related to Amortization of LPUs Held by BGC Employees (Detail)</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="CompensationSummaryofOutstandingLPUsHeldbyBGCEmployeeswithStatedVestingDetail" roleURI="http://www.bgcpartners.com/role/CompensationSummaryofOutstandingLPUsHeldbyBGCEmployeeswithStatedVestingDetail">
        <link:definition>240784047 - Disclosure - Compensation - Summary of Outstanding LPUs Held by BGC Employees with Stated Vesting (Detail)</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="CompensationCompensationExpenseRelatedtoRestrictedStockUnitHeldbyBGCEmployeesDetail" roleURI="http://www.bgcpartners.com/role/CompensationCompensationExpenseRelatedtoRestrictedStockUnitHeldbyBGCEmployeesDetail">
        <link:definition>240794048 - Disclosure - Compensation - Compensation Expense Related to Restricted Stock Unit Held by BGC Employees (Detail)</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="CompensationActivityAssociatedwithRestrictedStockUnitsDetail" roleURI="http://www.bgcpartners.com/role/CompensationActivityAssociatedwithRestrictedStockUnitsDetail">
        <link:definition>240804049 - Disclosure - Compensation - Activity Associated with Restricted Stock Units (Detail)</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="CommitmentsContingenciesandGuarantees" roleURI="http://www.bgcpartners.com/role/CommitmentsContingenciesandGuarantees">
        <link:definition>210811020 - Disclosure - Commitments, Contingencies and Guarantees</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="CommitmentsContingenciesandGuaranteesDetail" roleURI="http://www.bgcpartners.com/role/CommitmentsContingenciesandGuaranteesDetail">
        <link:definition>240824050 - Disclosure - Commitments, Contingencies and Guarantees (Detail)</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.bgcpartners.com/role/IncomeTaxes">
        <link:definition>210831021 - 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="IncomeTaxesDetail" roleURI="http://www.bgcpartners.com/role/IncomeTaxesDetail">
        <link:definition>240844051 - Disclosure - Income Taxes (Detail)</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="RegulatoryRequirements" roleURI="http://www.bgcpartners.com/role/RegulatoryRequirements">
        <link:definition>210851022 - Disclosure - Regulatory Requirements</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="RegulatoryRequirementsDetail" roleURI="http://www.bgcpartners.com/role/RegulatoryRequirementsDetail">
        <link:definition>240864052 - Disclosure - Regulatory Requirements (Detail)</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="SegmentGeographicandProductInformation" roleURI="http://www.bgcpartners.com/role/SegmentGeographicandProductInformation">
        <link:definition>210871023 - Disclosure - Segment, Geographic and Product Information</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="SegmentGeographicandProductInformationTables" roleURI="http://www.bgcpartners.com/role/SegmentGeographicandProductInformationTables">
        <link:definition>230883012 - Disclosure - Segment, Geographic and Product Information (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="SegmentGeographicandProductInformationAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/SegmentGeographicandProductInformationAdditionalInformationDetail">
        <link:definition>240894053 - Disclosure - Segment, Geographic and Product Information - Additional Information (Detail)</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="SegmentGeographicandProductInformationGeographicInformationRegardingRevenuesDetail" roleURI="http://www.bgcpartners.com/role/SegmentGeographicandProductInformationGeographicInformationRegardingRevenuesDetail">
        <link:definition>240904054 - Disclosure - Segment, Geographic and Product Information - Geographic Information Regarding Revenues (Detail)</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="SegmentGeographicandProductInformationInformationRegardingLongLivedAssetsinGeographicAreasDetail" roleURI="http://www.bgcpartners.com/role/SegmentGeographicandProductInformationInformationRegardingLongLivedAssetsinGeographicAreasDetail">
        <link:definition>240914055 - Disclosure - Segment, Geographic and Product Information - Information Regarding Long-Lived Assets in Geographic Areas (Detail)</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="SegmentGeographicandProductInformationProductInformationRegardingRevenuesDetail" roleURI="http://www.bgcpartners.com/role/SegmentGeographicandProductInformationProductInformationRegardingRevenuesDetail">
        <link:definition>240924056 - Disclosure - Segment, Geographic and Product Information - Product Information Regarding Revenues (Detail)</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="RevenuesfromContractswithCustomers" roleURI="http://www.bgcpartners.com/role/RevenuesfromContractswithCustomers">
        <link:definition>210931024 - Disclosure - Revenues 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="RevenuesfromContractswithCustomersTables" roleURI="http://www.bgcpartners.com/role/RevenuesfromContractswithCustomersTables">
        <link:definition>230943013 - Disclosure - Revenues 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="RevenuesfromContractswithCustomersSummaryofRevenuesfromContractswithCustomersandOtherSourcesofRevenuesDetail" roleURI="http://www.bgcpartners.com/role/RevenuesfromContractswithCustomersSummaryofRevenuesfromContractswithCustomersandOtherSourcesofRevenuesDetail">
        <link:definition>240954057 - Disclosure - Revenues from Contracts with Customers - Summary of Revenues from Contracts with Customers and Other Sources of Revenues (Detail)</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="RevenuesfromContractswithCustomersAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/RevenuesfromContractswithCustomersAdditionalInformationDetail">
        <link:definition>240964058 - Disclosure - Revenues from Contracts with Customers - Additional Information (Detail)</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.bgcpartners.com/role/Leases">
        <link:definition>210971025 - 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="LeasesTables" roleURI="http://www.bgcpartners.com/role/LeasesTables">
        <link:definition>230983014 - 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="LeasesAdditionalInformationDetail" roleURI="http://www.bgcpartners.com/role/LeasesAdditionalInformationDetail">
        <link:definition>240994059 - Disclosure - Leases - Additional Information (Detail)</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="LeasesScheduleofSupplementalInformationRelatedtoOperatingandFinanceLeasesDetail" roleURI="http://www.bgcpartners.com/role/LeasesScheduleofSupplementalInformationRelatedtoOperatingandFinanceLeasesDetail">
        <link:definition>241004060 - Disclosure - Leases - Schedule of Supplemental Information Related to Operating and Finance Leases (Detail)</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="LeasesScheduleofWeightedAverageRemainingLeaseTermandDiscountRateDetail" roleURI="http://www.bgcpartners.com/role/LeasesScheduleofWeightedAverageRemainingLeaseTermandDiscountRateDetail">
        <link:definition>241014061 - Disclosure - Leases - Schedule of Weighted-Average Remaining Lease Term and Discount Rate (Detail)</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="LeasesScheduleofComponentsofLeaseExpenseDetail" roleURI="http://www.bgcpartners.com/role/LeasesScheduleofComponentsofLeaseExpenseDetail">
        <link:definition>241024062 - Disclosure - Leases - Schedule of Components of Lease Expense (Detail)</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="LeasesScheduleofMaturityAnalysisofLeaseLiabilitiesDetail" roleURI="http://www.bgcpartners.com/role/LeasesScheduleofMaturityAnalysisofLeaseLiabilitiesDetail">
        <link:definition>241034063 - Disclosure - Leases - Schedule of Maturity Analysis of Lease Liabilities (Detail)</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="LeasesScheduleofMaturityAnalysisofLeaseLiabilitiesDetail_1" roleURI="http://www.bgcpartners.com/role/LeasesScheduleofMaturityAnalysisofLeaseLiabilitiesDetail_1">
        <link:definition>241034063 - Disclosure - Leases - Schedule of Maturity Analysis of Lease Liabilities (Detail)</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="LeasesScheduleofCashFlowInformationRelatedtoLeaseLiabilitiesDetail" roleURI="http://www.bgcpartners.com/role/LeasesScheduleofCashFlowInformationRelatedtoLeaseLiabilitiesDetail">
        <link:definition>241044064 - Disclosure - Leases - Schedule of Cash Flow Information Related to Lease Liabilities (Detail)</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="CurrentExpectedCreditLossesCECL" roleURI="http://www.bgcpartners.com/role/CurrentExpectedCreditLossesCECL">
        <link:definition>211051026 - Disclosure - Current Expected Credit Losses (CECL)</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="CurrentExpectedCreditLossesCECLTables" roleURI="http://www.bgcpartners.com/role/CurrentExpectedCreditLossesCECLTables">
        <link:definition>231063015 - Disclosure - Current Expected Credit Losses (CECL) (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="CurrentExpectedCreditLossesCECLScheduleofCurrentExpectedCreditLossesDetails" roleURI="http://www.bgcpartners.com/role/CurrentExpectedCreditLossesCECLScheduleofCurrentExpectedCreditLossesDetails">
        <link:definition>241074065 - Disclosure - Current Expected Credit Losses (CECL) - Schedule of Current Expected Credit Losses (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="CurrentExpectedCreditLossesCECLNarrativeDetails" roleURI="http://www.bgcpartners.com/role/CurrentExpectedCreditLossesCECLNarrativeDetails">
        <link:definition>241084066 - Disclosure - Current Expected Credit Losses (CECL) - 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="SubsequentEvents" roleURI="http://www.bgcpartners.com/role/SubsequentEvents">
        <link:definition>211091027 - 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="SubsequentEventsDetail" roleURI="http://www.bgcpartners.com/role/SubsequentEventsDetail">
        <link:definition>241104067 - Disclosure - Subsequent Events (Detail)</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="bgcp_CantorFitzgeraldReliefFundMember" abstract="true" name="CantorFitzgeraldReliefFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_BrokerageMember" abstract="true" name="BrokerageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_IssuanceAndSaleOfCommonStock" abstract="false" name="IssuanceAndSaleOfCommonStock" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_LFIMember" abstract="true" name="LFIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LeaseHoldImprovementsAndOtherFixedAssetsMember" abstract="true" name="LeaseHoldImprovementsAndOtherFixedAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_PurchaseOfUnitsUponRedemptionOfFoundingWorkingPartnerUnitsAndSubsequentRepurchasesUnits" abstract="false" name="PurchaseOfUnitsUponRedemptionOfFoundingWorkingPartnerUnitsAndSubsequentRepurchasesUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_PreferredUnitsMember" abstract="true" name="PreferredUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ExecutiveVicePresidentAndGeneralCounselMember" abstract="true" name="ExecutiveVicePresidentAndGeneralCounselMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FivePointOneTwoFivePercentageSeniorNotesDueTwoThousandTwentyOneMember" abstract="true" name="FivePointOneTwoFivePercentageSeniorNotesDueTwoThousandTwentyOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RecentlyAdoptedAccountingPronouncementsPolicyPolicyTextBlock" abstract="false" name="RecentlyAdoptedAccountingPronouncementsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_ClassBUnitsMember" abstract="true" name="ClassBUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_BrokerageInsuranceMember" abstract="true" name="BrokerageInsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_SubsidiaryOwnershipPercentage" abstract="false" name="SubsidiaryOwnershipPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bgcp_ContingentConsiderationLiabilityMember" abstract="true" name="ContingentConsiderationLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_AggregateCantorUnits" abstract="false" name="AggregateCantorUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_LongTermEquityIncentivePlanMember" abstract="true" name="LongTermEquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_AllocationOfIncomeLossToLimitedPartnershipInterestDiluted" abstract="false" name="AllocationOfIncomeLossToLimitedPartnershipInterestDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FivePointThreeSevenFivePercentSeniorNotesDueTwoThousandTwentyThreeMember" abstract="true" name="FivePointThreeSevenFivePercentSeniorNotesDueTwoThousandTwentyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LimitedPartnershipInterestConversionRatio" abstract="false" name="LimitedPartnershipInterestConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bgcp_NotionalValueOfLimitedPartnershipUnitsWithPostTerminationPayOutAmount" abstract="false" name="NotionalValueOfLimitedPartnershipUnitsWithPostTerminationPayOutAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NewmarkMember" abstract="true" name="NewmarkMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ItauUnibancoSAMember" abstract="true" name="ItauUnibancoSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RightToPurchaseFoundingPartnerUnitOutstanding" abstract="false" name="RightToPurchaseFoundingPartnerUnitOutstanding" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_LesseeSupplementalBalanceSheetInformationTableTableTextBlock" abstract="false" name="LesseeSupplementalBalanceSheetInformationTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_CompensationAndEmployeeBenefitNet" abstract="false" name="CompensationAndEmployeeBenefitNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardLimitedPartnersCapitalUnitsAmortization" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardLimitedPartnersCapitalUnitsAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_BGCUSOpCoMember" abstract="true" name="BGCUSOpCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_DebtInstrumentNonExtensionNoticeTerm" abstract="false" name="DebtInstrumentNonExtensionNoticeTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassTable" abstract="true" name="ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_NewControlledEquityOfferingsProgramMember" abstract="true" name="NewControlledEquityOfferingsProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardRestrictionPeriod" abstract="false" name="SharebasedCompensationArrangementBySharebasedPaymentAwardAwardRestrictionPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_UnsecuredCreditAgreementMember" abstract="true" name="UnsecuredCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LesseeOperatingLeaseMonthlyRentExpense" abstract="false" name="LesseeOperatingLeaseMonthlyRentExpense" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AggregateConsiderationOfCantorUnits" abstract="false" name="AggregateConsiderationOfCantorUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_CommonStockExchangeableBasis" abstract="false" name="CommonStockExchangeableBasis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bgcp_ExchangeLPUsForCommonStockMember" abstract="true" name="ExchangeLPUsForCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RedemptionsAndRepurchases" abstract="false" name="RedemptionsAndRepurchases" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_OtherRevenues" abstract="false" name="OtherRevenues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NetIncomeLossAfterAdjustmentsForNoncashAndNonoperatingItems" abstract="false" name="NetIncomeLossAfterAdjustmentsForNoncashAndNonoperatingItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfExchangeRightsGrant" abstract="false" name="NumberOfExchangeRightsGrant" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_UndiscountedValueOfPaymentsOnAllContingencies" abstract="false" name="UndiscountedValueOfPaymentsOnAllContingencies" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PaymentRelatedToPSURedeemed" abstract="false" name="PaymentRelatedToPSURedeemed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_RevenueFromContractsWithCustomersTable" abstract="true" name="RevenueFromContractsWithCustomersTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_LesseeWeightedAverageRemainingLeaseTermAndDiscountRateTableTableTextBlock" abstract="false" name="LesseeWeightedAverageRemainingLeaseTermAndDiscountRateTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_CharitableContributions" abstract="false" name="CharitableContributions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityNetUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityNetUnrealizedGainLossIncludedInOtherComprehensiveIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ChangeInEstimatedAcquisitionEarnoutPayables" abstract="false" name="ChangeInEstimatedAcquisitionEarnoutPayables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PurchaseOfUnitsUponRedemptionOfFoundingWorkingPartnersUnits" abstract="false" name="PurchaseOfUnitsUponRedemptionOfFoundingWorkingPartnersUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_EquityBasedCompensationAndAllocationsOfNetIncomeToLimitedPartnershipUnitsAndFoundingOrWorkingPartnerUnits" abstract="false" name="EquityBasedCompensationAndAllocationsOfNetIncomeToLimitedPartnershipUnitsAndFoundingOrWorkingPartnerUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FuturesContractsAssetsFairValueDisclosure" abstract="false" name="FuturesContractsAssetsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_DerivativeAdditionalBalanceInGrossAmountsNotOffset" abstract="false" name="DerivativeAdditionalBalanceInGrossAmountsNotOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PaymentRelatedToNonExchangeablePPSURedeemed" abstract="false" name="PaymentRelatedToNonExchangeablePPSURedeemed" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_CantorRightsToPurchaseExchangeableUnitsMember" abstract="true" name="CantorRightsToPurchaseExchangeableUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LoansForgivableLoansAndOtherReceivablesFromEmployeesAndPartnersNetMember" abstract="true" name="LoansForgivableLoansAndOtherReceivablesFromEmployeesAndPartnersNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ThreePointSevenFiveZeroPercentSeniorNotesDueOctoberOneTwoThousandTwentyFourMember" abstract="true" name="ThreePointSevenFiveZeroPercentSeniorNotesDueOctoberOneTwoThousandTwentyFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_NumberOfUnitsRedeemedAndCancelledForExchange" abstract="false" name="NumberOfUnitsRedeemedAndCancelledForExchange" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NonDistributingPartnershipUnitsMember" abstract="true" name="NonDistributingPartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RelatedPartyTransactionsPercentageOfRevenueSharedBetweenEntities" abstract="false" name="RelatedPartyTransactionsPercentageOfRevenueSharedBetweenEntities" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bgcp_CommonStockSharesIssuedNetOfSharesForTaxWithholdings" abstract="false" name="CommonStockSharesIssuedNetOfSharesForTaxWithholdings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_OtherAmericasMember" abstract="true" name="OtherAmericasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FuturesContractLiabilitiesFairValueDisclosure" abstract="false" name="FuturesContractLiabilitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTableTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_IssuanceOfLongTermDebtAndCollateralizedBorrowingsNetOfDeferredIssuanceCosts" abstract="false" name="IssuanceOfLongTermDebtAndCollateralizedBorrowingsNetOfDeferredIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FivePointOneTwoFivePercentageSeniorNotesMember" abstract="true" name="FivePointOneTwoFivePercentageSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RemainingLiabilityRelatedToCharitableContributions" abstract="false" name="RemainingLiabilityRelatedToCharitableContributions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_CharitableContributionsAdditionalExpenseRecognized" abstract="false" name="CharitableContributionsAdditionalExpenseRecognized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FeesPayable" abstract="false" name="FeesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ExchangeOfFoundingWorkingPartnerInterests" abstract="false" name="ExchangeOfFoundingWorkingPartnerInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ScheduleOfCashFlowInformationRelatedToLeaseLiabilitiesTableTableTextBlock" abstract="false" name="ScheduleOfCashFlowInformationRelatedToLeaseLiabilitiesTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_ValueOfShareWithholdingForTaxShareBasedCompensation" abstract="false" name="ValueOfShareWithholdingForTaxShareBasedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_MaximumAmountOfCommonStocksOfferAndSale" abstract="false" name="MaximumAmountOfCommonStocksOfferAndSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_OccupancyAndEquipmentMember" abstract="true" name="OccupancyAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ReceivableFromOpenDerivativeContracts" abstract="false" name="ReceivableFromOpenDerivativeContracts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AmountOfAssetBackedCommercialPaperFacilityAuthorizedAmount" abstract="false" name="AmountOfAssetBackedCommercialPaperFacilityAuthorizedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FoundingPartnerUnitEarningsDistribution" abstract="false" name="FoundingPartnerUnitEarningsDistribution" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfNonExchangeablePPSU" abstract="false" name="NumberOfNonExchangeablePPSU" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnitsAmortization" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnitsAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_IssuanceOfClassCommonStockAndLimitedPartnershipInterestsForAcquisitions" abstract="false" name="IssuanceOfClassCommonStockAndLimitedPartnershipInterestsForAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_StockIssuedDuringPeriodAdditionalConsideration" abstract="false" name="StockIssuedDuringPeriodAdditionalConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_LesseeOperatingLeaseSubleaseTerm" abstract="false" name="LesseeOperatingLeaseSubleaseTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_BusinessOverviewPolicyPolicyTextBlock" abstract="false" name="BusinessOverviewPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_LimitedPartnershipMember" abstract="true" name="LimitedPartnershipMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_GfiGroupMember" abstract="true" name="GfiGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RedemptionOfFoundingWorkingPartnerInterests" abstract="false" name="RedemptionOfFoundingWorkingPartnerInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_CantorFitzgeraldCoMember" abstract="true" name="CantorFitzgeraldCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_DataSoftwareAndPostTradeMember" abstract="true" name="DataSoftwareAndPostTradeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentRedeemed" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentRedeemed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_RightOfUseAssetsAndLiabilities" abstract="false" name="RightOfUseAssetsAndLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FourPointThreeSevenFivePercentageSeniorNotesMember" abstract="true" name="FourPointThreeSevenFivePercentageSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_StatedVestingScheduleMember" abstract="true" name="StatedVestingScheduleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LineOfCreditMaturityDateExtension" abstract="false" name="LineOfCreditMaturityDateExtension" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_AmountOfAssetBackedCommercialPaperFacility" abstract="false" name="AmountOfAssetBackedCommercialPaperFacility" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PayableForOpenDerivativeContracts" abstract="false" name="PayableForOpenDerivativeContracts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AccruedCommissionsAndOtherReceivablesNetMember" abstract="true" name="AccruedCommissionsAndOtherReceivablesNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_PartnershipUnitsMember" abstract="true" name="PartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_NumberOfExchangeablePLPUs" abstract="false" name="NumberOfExchangeablePLPUs" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfFoundingPartnerInterestsExchanged" abstract="false" name="NumberOfFoundingPartnerInterestsExchanged" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_FeesFromRelatedPartiesMember" abstract="true" name="FeesFromRelatedPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LesseeFinanceLeaseRenewalIncrementsTerm" abstract="false" name="LesseeFinanceLeaseRenewalIncrementsTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_ImpairmentsRelatedToRevenueReceivables" abstract="false" name="ImpairmentsRelatedToRevenueReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ContingentClassCommonStockMember" abstract="true" name="ContingentClassCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_TreasuryStockAcquiredWeightedAverageCostPerShare" abstract="false" name="TreasuryStockAcquiredWeightedAverageCostPerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bgcp_DeferredCompensationArrangementWithIndividualCompensationExpenseNotYetRecognized" abstract="false" name="DeferredCompensationArrangementWithIndividualCompensationExpenseNotYetRecognized" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_OffsettingDerivativeInstrumentsTableTableTextBlock" abstract="false" name="OffsettingDerivativeInstrumentsTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_LossesGainsOnEquityMethodInvestments" abstract="false" name="LossesGainsOnEquityMethodInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_IncrementalCommonSharesAttributableToOtherInstruments" abstract="false" name="IncrementalCommonSharesAttributableToOtherInstruments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_CantorAndFreedomMember" abstract="true" name="CantorAndFreedomMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_DescriptionOfBusinessTable" abstract="true" name="DescriptionOfBusinessTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_NumberOfPSUApprovedRedemption" abstract="false" name="NumberOfPSUApprovedRedemption" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_PercentageOfPreferredPartnershipUnitsAwardedPerCalendarYear" abstract="false" name="PercentageOfPreferredPartnershipUnitsAwardedPerCalendarYear" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bgcp_BrokerageRatesMember" abstract="true" name="BrokerageRatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchasesAndIssuances" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchasesAndIssuances" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PaymentRelatedToHUnitsRedeemed" abstract="false" name="PaymentRelatedToHUnitsRedeemed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AggregateEstimatedFairValueOfDeferredCompensationAwards" abstract="false" name="AggregateEstimatedFairValueOfDeferredCompensationAwards" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_RelatedPartyTransactionCompensationAndEmployeeBenefitExpense" abstract="false" name="RelatedPartyTransactionCompensationAndEmployeeBenefitExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_SecuritiesOwnedDisclosureTextBlock" abstract="false" name="SecuritiesOwnedDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_LimitedPartnershipInterestsExchangeRatio" abstract="false" name="LimitedPartnershipInterestsExchangeRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bgcp_BrokerageForeignExchangeMember" abstract="true" name="BrokerageForeignExchangeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_EquityMethodAndAlternativeInvestments" abstract="false" name="EquityMethodAndAlternativeInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_DataSoftwareAndPosttradeRevenue" abstract="false" name="DataSoftwareAndPosttradeRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ThreePointFourFourPercentageSecuredLoanArrangementMember" abstract="true" name="ThreePointFourFourPercentageSecuredLoanArrangementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_GainLossOnDivestitureAndOrSaleOfInvestment" abstract="false" name="GainLossOnDivestitureAndOrSaleOfInvestment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AggregateConsiderationOfCantorUnitsAsResultOfRedemption" abstract="false" name="AggregateConsiderationOfCantorUnitsAsResultOfRedemption" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_UnsecuredLoanAgreementMember" abstract="true" name="UnsecuredLoanAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_PaymentRelatedToNonExchangeablePPSUApprovedRedemption" abstract="false" name="PaymentRelatedToNonExchangeablePPSUApprovedRedemption" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_FoundingWorkingPartnerUnitsAverageRedemptionPrice" abstract="false" name="FoundingWorkingPartnerUnitsAverageRedemptionPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bgcp_CashTenderOfferMember" abstract="true" name="CashTenderOfferMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_BrokerageCreditMember" abstract="true" name="BrokerageCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_EstimatedFairValueOfLimitedPartnershipUnits" abstract="false" name="EstimatedFairValueOfLimitedPartnershipUnits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfHDUsRedeemed" abstract="false" name="NumberOfHDUsRedeemed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_PayablesRelatedToPendingTrades" abstract="false" name="PayablesRelatedToPendingTrades" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ThreePointEightNinePercentageSecuredLoanArrangementMember" abstract="true" name="ThreePointEightNinePercentageSecuredLoanArrangementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RevenueFromContractsWithCustomersLineItems" abstract="true" name="RevenueFromContractsWithCustomersLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_RegularUnitMember" abstract="true" name="RegularUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_NumberOfOperatingPartnerships" abstract="false" name="NumberOfOperatingPartnerships" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bgcp_TenderedAmountOnCashTenderOffer" abstract="false" name="TenderedAmountOnCashTenderOffer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfNonExchangeableUnitsRedeemed" abstract="false" name="NumberOfNonExchangeableUnitsRedeemed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfExchangeablePPSU" abstract="false" name="NumberOfExchangeablePPSU" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_LimitedPartnershipUnitsExchangeRatio" abstract="false" name="LimitedPartnershipUnitsExchangeRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bgcp_LimitedPartnershipUnitsMember" abstract="true" name="LimitedPartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_SmithMackMember" abstract="true" name="SmithMackMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_PaymentForForfeitureOfRestrictedStockAward" abstract="false" name="PaymentForForfeitureOfRestrictedStockAward" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_EstimatedFairValueOfLimitedPartnershipUnitsAndRestrictedStockUnits" abstract="false" name="EstimatedFairValueOfLimitedPartnershipUnitsAndRestrictedStockUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_StockIssuedDuringPeriodSharesRestrictedStockAwardVested" abstract="false" name="StockIssuedDuringPeriodSharesRestrictedStockAwardVested" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_CommissionsMember" abstract="true" name="CommissionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_AquaSecuritiesLpMember" abstract="true" name="AquaSecuritiesLpMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ForwardContractsAssetsFairValueDisclosure" abstract="false" name="ForwardContractsAssetsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AreaOfSublease" abstract="false" name="AreaOfSublease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:areaItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValueOutstandingRollForward" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsFairValueOutstandingRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_CommonStockIssuedRelatedToRedemptionsAndExchangesOfLimitedPartnershipInterests" abstract="false" name="CommonStockIssuedRelatedToRedemptionsAndExchangesOfLimitedPartnershipInterests" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_ThreePointSevenSevenPercentageSecuredLoanArrangementMember" abstract="true" name="ThreePointSevenSevenPercentageSecuredLoanArrangementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_DescriptionOfBusinessLineItems" abstract="true" name="DescriptionOfBusinessLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_StockIssuedDuringPeriodSharesExchangeOfUnits" abstract="false" name="StockIssuedDuringPeriodSharesExchangeOfUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfCommonStockSettledPerRestrictedStockUnit" abstract="false" name="NumberOfCommonStockSettledPerRestrictedStockUnit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_BGCHoldingsMember" abstract="true" name="BGCHoldingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_PaymentRelatedTaxForRedeemedPLPU" abstract="false" name="PaymentRelatedTaxForRedeemedPLPU" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ScheduleOfLimitedPartnersUnitsRedeemedTableTableTextBlock" abstract="false" name="ScheduleOfLimitedPartnersUnitsRedeemedTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_PaymentRelatedTaxForRedeemedPreferredHUnits" abstract="false" name="PaymentRelatedTaxForRedeemedPreferredHUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PercentageOfPreferredPartnershipUnitsAwarded" abstract="false" name="PercentageOfPreferredPartnershipUnitsAwarded" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bgcp_CastleOakMember" abstract="true" name="CastleOakMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ScheduleOfLimitedPartnershipUnitsRegularAndPreferredUnitsTableTableTextBlock" abstract="false" name="ScheduleOfLimitedPartnershipUnitsRegularAndPreferredUnitsTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresInPeriodFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresInPeriodFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_LoansForgivableLoansAndOtherReceivablesFromEmployeesAndPartners" abstract="false" name="LoansForgivableLoansAndOtherReceivablesFromEmployeesAndPartners" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_DeferredCompensationArrangementWithIndividualCompensationExpenseNotYetRecognizedPeriodForRecognition" abstract="false" name="DeferredCompensationArrangementWithIndividualCompensationExpenseNotYetRecognizedPeriodForRecognition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_BrokerageEnergyAndCommoditiesMember" abstract="true" name="BrokerageEnergyAndCommoditiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ContributionsOfCapitalToAndFromAffiliateForEquityBasedCompensation" abstract="false" name="ContributionsOfCapitalToAndFromAffiliateForEquityBasedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NewmarkHoldingsMember" abstract="true" name="NewmarkHoldingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ForeignExchangeAndCommoditiesOptionsMember" abstract="true" name="ForeignExchangeAndCommoditiesOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_AuthorizedLoansInvestmentsOrOtherCreditSupport" abstract="false" name="AuthorizedLoansInvestmentsOrOtherCreditSupport" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AurelBGCSASMember" abstract="true" name="AurelBGCSASMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_StockReleasedDuringPeriodRestrictedShares" abstract="false" name="StockReleasedDuringPeriodRestrictedShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_CalculationOfContributionRatioDenominator" abstract="false" name="CalculationOfContributionRatioDenominator" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bgcp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySalesAndSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfInstallment" abstract="false" name="NumberOfInstallment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="bgcp_IssuanceOfCommonStockUponExchangeOfLimitedPartnershipInterests" abstract="false" name="IssuanceOfCommonStockUponExchangeOfLimitedPartnershipInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PaymentRelatedTaxRateForCommonStock" abstract="false" name="PaymentRelatedTaxRateForCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfUnitsAcquired" abstract="false" name="NumberOfUnitsAcquired" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_BancoDaycovalSAMember" abstract="true" name="BancoDaycovalSAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FinanceLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="FinanceLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_WeightedAverageRedemptionPricePerUnit" abstract="false" name="WeightedAverageRedemptionPricePerUnit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bgcp_NumberOfNonExchangeablePPSUApprovedRedemption" abstract="false" name="NumberOfNonExchangeablePPSUApprovedRedemption" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_LesseeOperatingLeaseRenewalIncrementsTerm" abstract="false" name="LesseeOperatingLeaseRenewalIncrementsTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_NumberOfFoundingPartnerInterestsAsResultOfRedemption" abstract="false" name="NumberOfFoundingPartnerInterestsAsResultOfRedemption" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ShortTermBorrowingsExcludingRepurchaseAgreements" abstract="false" name="ShortTermBorrowingsExcludingRepurchaseAgreements" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PaymentSpecifiedPercentageOfGrossProceedsFromSaleOfShares" abstract="false" name="PaymentSpecifiedPercentageOfGrossProceedsFromSaleOfShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bgcp_PostTerminationPayoutMember" abstract="true" name="PostTerminationPayoutMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_UnsecuredCreditAgreementNovemberTwentyEightTwoThousandEighteenMember" abstract="true" name="UnsecuredCreditAgreementNovemberTwentyEightTwoThousandEighteenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_MrLutnickMember" abstract="true" name="MrLutnickMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FuturesExchangeGroupMember" abstract="true" name="FuturesExchangeGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ScheduleOfLeaseExpenseTable" abstract="true" name="ScheduleOfLeaseExpenseTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentRedeemedExchanged" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentRedeemedExchanged" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_PotenPartnersMember" abstract="true" name="PotenPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_REUsMember" abstract="true" name="REUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ScheduleOfLeaseExpenseLineItems" abstract="true" name="ScheduleOfLeaseExpenseLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_PaymentRelatedToNonExchangeablePSURedeemed" abstract="false" name="PaymentRelatedToNonExchangeablePSURedeemed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_IssuanceOfCommonStockAndGrantsOfExchangeability" abstract="false" name="IssuanceOfCommonStockAndGrantsOfExchangeability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NettingAndCollateralizedMember" abstract="true" name="NettingAndCollateralizedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_LimitedPartnershipUnitsAverageRedemptionPricePerUnit" abstract="false" name="LimitedPartnershipUnitsAverageRedemptionPricePerUnit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bgcp_NumberOfNonExchangeablePPSURedeemed" abstract="false" name="NumberOfNonExchangeablePPSURedeemed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_EmployeeLoansMember" abstract="true" name="EmployeeLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RedemptionOfFoundingWorkingPartnerUnitsUnits" abstract="false" name="RedemptionOfFoundingWorkingPartnerUnitsUnits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_DebtInstrumentExtendedTerm" abstract="false" name="DebtInstrumentExtendedTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_RelatedPartyTransactionsRevenueSharingAgreementTerm" abstract="false" name="RelatedPartyTransactionsRevenueSharingAgreementTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_FixedAssetsPledgedForSecuredLoanValue" abstract="false" name="FixedAssetsPledgedForSecuredLoanValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_RussiasInvasionOfUkraineMember" abstract="true" name="RussiasInvasionOfUkraineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_NumberOfExchangeableLPUExchangedForIssuanceOfShares" abstract="false" name="NumberOfExchangeableLPUExchangedForIssuanceOfShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_FeesFromRelatedPartiesRevenue" abstract="false" name="FeesFromRelatedPartiesRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_ExecutiveVicePresidentAndGeneralCounselTwoMember" abstract="true" name="ExecutiveVicePresidentAndGeneralCounselTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_GuaranteeFeeExpenses" abstract="false" name="GuaranteeFeeExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_EmployeeLoanExpense" abstract="false" name="EmployeeLoanExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_CommonStockExchangeRatio" abstract="false" name="CommonStockExchangeRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="bgcp_IntraDayOverdraftCreditLineMember" abstract="true" name="IntraDayOverdraftCreditLineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityNetUnrealizedGainLossIncludedInNetIncomeLoss" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityNetUnrealizedGainLossIncludedInNetIncomeLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfLimitedPartnershipUnitsExchangeableIntoShares" abstract="false" name="NumberOfLimitedPartnershipUnitsExchangeableIntoShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_UnitRedemptionAndShareRepurchaseActivityTableTableTextBlock" abstract="false" name="UnitRedemptionAndShareRepurchaseActivityTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_ExchangePLPUsForCommonStockMember" abstract="true" name="ExchangePLPUsForCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_CfManagementGroupIncMember" abstract="true" name="CfManagementGroupIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_RKFRetailHoldingsLLCMember" abstract="true" name="RKFRetailHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_BrazilianInterbankOfferedRateMember" abstract="true" name="BrazilianInterbankOfferedRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_EmployeeLoanAmortizationAndReserveOnEmployeeLoans" abstract="false" name="EmployeeLoanAmortizationAndReserveOnEmployeeLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AuthorizedLoansInvestmentsOrOtherCreditSupportIncreaseDecrease" abstract="false" name="AuthorizedLoansInvestmentsOrOtherCreditSupportIncreaseDecrease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_PaymentRelatedToExchangeablePPSUsRedeemedUponExchangeInConnectionWithLLPStatus" abstract="false" name="PaymentRelatedToExchangeablePPSUsRedeemedUponExchangeInConnectionWithLLPStatus" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_DerivativeContractInGainPositionReplacementCost" abstract="false" name="DerivativeContractInGainPositionReplacementCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_BGCHoldingsPartnershipUnitsMember" abstract="true" name="BGCHoldingsPartnershipUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_MarkupOnCost" abstract="false" name="MarkupOnCost" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="bgcp_EquityBasedCompensationAndAllocationOfNetIncomeToLimitedPartnershipUnitsAndFoundingPartnerUnits" abstract="false" name="EquityBasedCompensationAndAllocationOfNetIncomeToLimitedPartnershipUnitsAndFoundingPartnerUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_IncrementalCommonSharesAttributableToLimitedPartnershipInterests" abstract="false" name="IncrementalCommonSharesAttributableToLimitedPartnershipInterests" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_ShortTermLoansMember" abstract="true" name="ShortTermLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ForwardContractLiabilitiesFairValueDisclosure" abstract="false" name="ForwardContractLiabilitiesFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AccountsPayableAccruedAndOtherLiabilitiesMember" abstract="true" name="AccountsPayableAccruedAndOtherLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_AdditionalExpenseAndAssociatedLiabilityToCharitableContributions" abstract="false" name="AdditionalExpenseAndAssociatedLiabilityToCharitableContributions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfPPSUApprovedRedemption" abstract="false" name="NumberOfPPSUApprovedRedemption" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfNonExchangeableLPU" abstract="false" name="NumberOfNonExchangeableLPU" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_RegulatoryRequirementMinimumPeriodOfCashOrHighlyLiquidSecuritiesToCoverOperatingCosts" abstract="false" name="RegulatoryRequirementMinimumPeriodOfCashOrHighlyLiquidSecuritiesToCoverOperatingCosts" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_ThreePointSevenFiveZeroPercentSeniorNotesMember" abstract="true" name="ThreePointSevenFiveZeroPercentSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_NumberOfOutstandingRestrictedSharesHeld" abstract="false" name="NumberOfOutstandingRestrictedSharesHeld" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_DisposalGroupIncludingDiscontinuedOperationsAdvisorFee" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationsAdvisorFee" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_RedemptionsAndRepurchasesWeightedAveragePrice" abstract="false" name="RedemptionsAndRepurchasesWeightedAveragePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bgcp_ScheduleOfLimitedPartnersUnitsWithStatedVestingNotReceiveQuarterlyAllocationsOfNetIncomeTableTableTextBlock" abstract="false" name="ScheduleOfLimitedPartnersUnitsWithStatedVestingNotReceiveQuarterlyAllocationsOfNetIncomeTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_MeasurementInputProbabilityOfMeetingEarnoutAndContingenciesMember" abstract="true" name="MeasurementInputProbabilityOfMeetingEarnoutAndContingenciesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_FairValueInputsAssetsAndLiabilitiesQuantitativeInformationTableTableTextBlock" abstract="false" name="FairValueInputsAssetsAndLiabilitiesQuantitativeInformationTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="bgcp_UnderwritingFeesMember" abstract="true" name="UnderwritingFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ClassOfCommonStockExchangedToAnotherClassOfCommonStock" abstract="false" name="ClassOfCommonStockExchangedToAnotherClassOfCommonStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfPLPUShareIssuedForNonExchangeable" abstract="false" name="NumberOfPLPUShareIssuedForNonExchangeable" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfPreferredHUnitsRedeemed" abstract="false" name="NumberOfPreferredHUnitsRedeemed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_OtherEuropeMiddleEastAndAfricaMember" abstract="true" name="OtherEuropeMiddleEastAndAfricaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ReceivablesFromBrokersDealersAndClearingOrganizationsMember" abstract="true" name="ReceivablesFromBrokersDealersAndClearingOrganizationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_SeniorRevolvingCreditAgreementMember" abstract="true" name="SeniorRevolvingCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_BGCPartnersIncMember" abstract="true" name="BGCPartnersIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassLineItems" abstract="true" name="ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetByMajorClassLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="bgcp_NumberOfUnitsRedeemed" abstract="false" name="NumberOfUnitsRedeemed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_PaymentRelatedForRedeemedPreferredHUnits" abstract="false" name="PaymentRelatedForRedeemedPreferredHUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_AggregateCantorUnitsAsResultOfRedemption" abstract="false" name="AggregateCantorUnitsAsResultOfRedemption" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_BrokerageEquitiesDerivativesAndCashEquitiesMember" abstract="true" name="BrokerageEquitiesDerivativesAndCashEquitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ExchangeSharePrice" abstract="false" name="ExchangeSharePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="bgcp_RepurchaseOfCommonStockAmount" abstract="false" name="RepurchaseOfCommonStockAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_DebtInstrumentAuthorizedRepurchaseAmount" abstract="false" name="DebtInstrumentAuthorizedRepurchaseAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_NumberOfNonExchangeablePSU" abstract="false" name="NumberOfNonExchangeablePSU" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_NumberOfHUnitsRedeemed" abstract="false" name="NumberOfHUnitsRedeemed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_PaymentsToAcquireBusinessesNetOfCashAcquiredFinancingActivities" abstract="false" name="PaymentsToAcquireBusinessesNetOfCashAcquiredFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_TowerBridgeInternationalServicesLPMember" abstract="true" name="TowerBridgeInternationalServicesLPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ContingentConsiderationLiabilityFairValueDisclosure" abstract="false" name="ContingentConsiderationLiabilityFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_CantorMember" abstract="true" name="CantorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_ReceivableFromNetPendingTrades" abstract="false" name="ReceivableFromNetPendingTrades" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="bgcp_WeightedAverageNumberOfDilutedSharesOutstandingFromContinuingOperations" abstract="false" name="WeightedAverageNumberOfDilutedSharesOutstandingFromContinuingOperations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="bgcp_RegulatoryRequirementMinimumPeriodOfFinancialResourcesToCoverOperatingCosts" abstract="false" name="RegulatoryRequirementMinimumPeriodOfFinancialResourcesToCoverOperatingCosts" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="bgcp_FivePointThreeSevenFivePercentSeniorNotesMember" abstract="true" name="FivePointThreeSevenFivePercentSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bgcp_CantorAndCFGMMember" abstract="true" name="CantorAndCFGMMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
