<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/nport" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ncom="http://www.sec.gov/edgar/nportcommon" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
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    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>
      
      <filer>
        <issuerCredentials>
          <cik>0001976322</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>
      
      
      <seriesClassInfo>
        <seriesId>S000097925</seriesId>
        <classId>C000267437</classId>
      </seriesClassInfo>
      
      
    </filerInfo>
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      <regName>Themes ETF Trust</regName>
      <regFileNumber>811-23872</regFileNumber>
      <regCik>0001976322</regCik>
      <regLei>529900NYKGD1N3B8DB45</regLei>
      <regStreet1>34 East Putnam Avenue</regStreet1>
      <regStreet2>Suite 112</regStreet2>
      <regCity>Greenwich</regCity>
      <regStateConditional regCountry="US" regState="US-CT"/>
      <regZipOrPostalCode>06830</regZipOrPostalCode>
      <regPhone>646-206-1788</regPhone>
      <seriesName>Leverage Shares 2X Long VALE Daily ETF</seriesName>
      <seriesId>S000097925</seriesId>
      <seriesLei>529900MV46TI4M1GTM72</seriesLei>
      <repPdEnd>2026-10-31</repPdEnd>
      <repPdDate>2026-04-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>892154.280000000000</totAssets>
      <totLiabs>4532.960000000000</totLiabs>
      <netAssets>887621.320000000000</netAssets>
      <assetsAttrMiscSec>0.000000000000</assetsAttrMiscSec>
      <assetsInvested>0.000000000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.000000000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.000000000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.000000000000</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0.000000000000</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0.000000000000</amtPayAftOneYrBanksBorr>
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      <standByCommit>0.000000000000</standByCommit>
      <liquidPref>0.000000000000</liquidPref>
      <cshNotRptdInCorD>597867.210000000000</cshNotRptdInCorD>
      <isNonCashCollateral>N</isNonCashCollateral>
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        <monthlyTotReturns>
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          <equityContracts>
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      <mon3Flow redemption=".000000000000" reinvestment=".000000000000" sales=".000000000000"/>
      
      
      
      <varInfo>
        
        <fundsDesignatedInfo>
          <nameDesignatedIndex>VALE US Equity</nameDesignatedIndex>
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        </fundsDesignatedInfo>
        
      </varInfo>
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    <invstOrSecs>
      <invstOrSec>
        <name>N/A</name>
        <lei>N/A</lei>
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          <other otherDesc="USER DEFINED" value="91912E105-TRS-01/27/27CS"/>
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        <payoffProfile>N/A</payoffProfile>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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            <counterparties>
              <counterpartyName>CLEAR STREET LLC</counterpartyName>
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              <otherRefInst>
                <issuerName>Vale SA</issuerName>
                <issueTitle>Vale SA</issueTitle>
                <identifiers>
                  <cusip value="91912E105"/>
                  <isin value="US91912E1055"/>
                  <ticker value="VALE"/>
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            <swapFlag>Y</swapFlag>
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            <terminationDt>2027-01-27</terminationDt>
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        </derivativeInfo>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>First American Treasury Obliga</name>
        <lei>549300UU586IAH2B8H03</lei>
        <title>First American Treasury Obligations Fund</title>
        <cusip>31846V328</cusip>
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          <isin value="US31846V3289"/>
          <ticker value="FXFXX"/>
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        <curCd>USD</curCd>
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        <pctVal>19.9242814492</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>N/A</name>
        <lei>N/A</lei>
        <title>VALE SWAP MAR</title>
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        <identifiers>
          <other otherDesc="USER DEFINED" value="91912E105-TRS-01/27/27MAR"/>
        </identifiers>
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        <pctVal>2.1908610758</pctVal>
        <payoffProfile>N/A</payoffProfile>
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        <issuerConditional desc="N/A" issuerCat="OTHER"/>
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        <isRestrictedSec>N</isRestrictedSec>
        
        <fairValLevel>2</fairValLevel>
        <derivativeInfo>
          <swapDeriv derivCat="SWP">
            <counterparties>
              <counterpartyName>MAREX CAPITAL MARKETS INC.</counterpartyName>
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                <issuerName>Vale SA</issuerName>
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                  <cusip value="91912E105"/>
                  <isin value="US91912E1055"/>
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            <swapFlag>Y</swapFlag>
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        <securityLending>
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      <invstOrSec>
        <name>N/A</name>
        <lei>N/A</lei>
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          <other otherDesc="USER DEFINED" value="91912E105-TRS-01/27/27CF"/>
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        <fairValLevel>2</fairValLevel>
        <derivativeInfo>
          <swapDeriv derivCat="SWP">
            <counterparties>
              <counterpartyName>CANTOR FITZGERALD &amp; CO.</counterpartyName>
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                <issuerName>Vale SA</issuerName>
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                <identifiers>
                  <cusip value="91912E105"/>
                  <isin value="US91912E1055"/>
                  <ticker value="VALE"/>
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            <swapFlag>Y</swapFlag>
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          </swapDeriv>
        </derivativeInfo>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2026-06-23</ncom:dateSigned>
      <ncom:nameOfApplicant>Themes ETF Trust</ncom:nameOfApplicant>
      <ncom:signature>/s/ Dobromir Kamburov</ncom:signature>
      <ncom:signerName>Dobromir Kamburov</ncom:signerName>
      <ncom:title>Treasurer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
