<?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" xsi:schemaLocation="http://www.sec.gov/edgar/nport eis_NPORT_Filer.xsd">
  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000778207</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000031950</seriesId>
        <classId>C000099460</classId>
        <classId>C000099459</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>TRANSAMERICA SERIES TRUST</regName>
      <regFileNumber>811-04419</regFileNumber>
      <regCik>0000778207</regCik>
      <regLei>5493000QR1WGXIM5V222</regLei>
      <regStreet1>1801 CALIFORNIA STREET</regStreet1>
      <regStreet2>SUITE 5200</regStreet2>
      <regCity>DENVER</regCity>
      <regStateConditional regCountry="US" regState="US-CO"/>
      <regZipOrPostalCode>80202</regZipOrPostalCode>
      <regPhone>720-493-4256</regPhone>
      <seriesName>Transamerica BlackRock iShares Active Asset Allocation - Conservative VP</seriesName>
      <seriesId>S000031950</seriesId>
      <seriesLei>5493001D7G0PMII29A88</seriesLei>
      <repPdEnd>2025-12-31</repPdEnd>
      <repPdDate>2025-03-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>224205940.96</totAssets>
      <totLiabs>26465347.04</totLiabs>
      <netAssets>197740593.92</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0.00000000</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0.00000000</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0.00000000</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0.00000000</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
      <cshNotRptdInCorD>0.00000000</cshNotRptdInCorD>
      <borrowers>
        <borrower aggrVal="4905723.15000000" lei="MBNUM2BPBDO7JBLYG310" name="Citigroup Global Markets Inc."/>
        <borrower aggrVal="975403.12000000" lei="549300HN4UKV1E2R3U73" name="BofA Securities, Inc."/>
        <borrower aggrVal="1747662.96000000" lei="FOR8UP27PHTHYVLBNG30" name="Goldman Sachs &amp; Co. LLC"/>
        <borrower aggrVal="1403.15000000" lei="AC28XWWI3WIBK2824319" name="Barclays Capital Inc."/>
        <borrower aggrVal="154397.12000000" lei="RCNB6OTYUAMMP879YW96" name="BNP Paribas Securities Corp."/>
      </borrowers>
      <aggregateCondition isNonCashCollateral="Y">
        <aggregateInfos>
          <aggregateInfo amt="1470.28000000" collatrl="1433.90000000">
            <invstCat>UST</invstCat>
          </aggregateInfo>
        </aggregateInfos>
      </aggregateCondition>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000099460" rtn1="1.39000000" rtn2="1.06000000" rtn3="-1.46000000"/>
          <monthlyTotReturn classId="C000099459" rtn1="1.49000000" rtn2="1.05000000" rtn3="-1.45000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="1610832.24000000" netUnrealizedAppr="1403132.86000000"/>
        <othMon2 netRealizedGain="653967.59000000" netUnrealizedAppr="1201355.16000000"/>
        <othMon3 netRealizedGain="-2185808.42000000" netUnrealizedAppr="-1358758.57000000"/>
      </returnInfo>
      <mon1Flow redemption="4573276.58000000" reinvestment="0.00000000" sales="120597.55000000"/>
      <mon2Flow redemption="2895095.65000000" reinvestment="0.00000000" sales="360676.57000000"/>
      <mon3Flow redemption="3085062.42000000" reinvestment="0.00000000" sales="32409.25000000"/>



    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>iShares MSCI EAFE ETF</name>
        <lei>549300O0XO3KDQV68404</lei>
        <title>iShares MSCI EAFE ETF</title>
        <cusip>464287465</cusip>
        <identifiers>
          <isin value="US4642874659"/>
        </identifiers>
        <balance>222718.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>18202742.14000000</valUSD>
        <pctVal>9.205364350915</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core U.S. Aggregate Bond ETF</name>
        <lei>549300F7VSXTKBGHJE47</lei>
        <title>iShares Core U.S. Aggregate Bond ETF</title>
        <cusip>464287226</cusip>
        <identifiers>
          <isin value="US4642872265"/>
        </identifiers>
        <balance>699027.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>69147750.84000000</valUSD>
        <pctVal>34.96892037654</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>State Street Global Advisors</name>
        <lei>5493008BJIBKQ5KTIF74</lei>
        <title>State Street Navigator Securities Lending Government Money Market Portfolio</title>
        <cusip>857509301</cusip>
        <identifiers>
          <isin value="US8575093013"/>
        </identifiers>
        <balance>7968078.75000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7968078.75000000</valUSD>
        <pctVal>4.029561453235</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="7968078.75000000" isCashCollateral="Y"/>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares iBoxx $ Investment Grade Corporate Bond ETF</name>
        <lei>549300FYCXFXG8POR355</lei>
        <title>iShares iBoxx $ Investment Grade Corporate Bond ETF</title>
        <cusip>464287242</cusip>
        <identifiers>
          <isin value="US4642872422"/>
        </identifiers>
        <balance>80445.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>8743567.05000000</valUSD>
        <pctVal>4.421736011138</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="4905723.15000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares Russell 2000 ETF</name>
        <lei>549300O80OAR5VTWR172</lei>
        <title>iShares Russell 2000 ETF</title>
        <cusip>464287655</cusip>
        <identifiers>
          <isin value="US4642876555"/>
        </identifiers>
        <balance>37379.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7456736.71000000</valUSD>
        <pctVal>3.770969107646</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="1403.15000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares 7-10 Year Treasury Bond ETF</name>
        <lei>549300XS1PPZG92M8L16</lei>
        <title>iShares 7-10 Year Treasury Bond ETF</title>
        <cusip>464287440</cusip>
        <identifiers>
          <isin value="US4642874402"/>
        </identifiers>
        <balance>70437.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6717576.69000000</valUSD>
        <pctVal>3.397166235233</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Core MSCI EAFE ETF</name>
        <lei>5493009FT582MI7Y3I36</lei>
        <title>iShares Core MSCI EAFE ETF</title>
        <cusip>46432F842</cusip>
        <identifiers>
          <isin value="US46432F8427"/>
        </identifiers>
        <balance>82017.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6204586.05000000</valUSD>
        <pctVal>3.137740171100</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares MSCI Japan ETF</name>
        <lei>5493008I6YRUC6I0S051</lei>
        <title>iShares MSCI Japan ETF</title>
        <cusip>46434G822</cusip>
        <identifiers>
          <isin value="US46434G8226"/>
        </identifiers>
        <balance>56135.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3848615.60000000</valUSD>
        <pctVal>1.946295155539</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="2877463.20000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares U.S. Treasury Bond ETF</name>
        <lei>549300YMK9GAMCTG8G20</lei>
        <title>iShares U.S. Treasury Bond ETF</title>
        <cusip>46429B267</cusip>
        <identifiers>
          <isin value="US46429B2676"/>
        </identifiers>
        <balance>398021.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>9148512.69000000</valUSD>
        <pctVal>4.626522308161</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>Fixed Income Clearing Corp</name>
        <lei>549300H47WTHXPU08X20</lei>
        <title>FIXED INC CLEARING CORP.REPO</title>
        <cusip>000000000</cusip>
        <identifiers>
          <other otherDesc="Internal Identifier" value="85748R009"/>
        </identifiers>
        <balance>1416022.79000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>1416022.79000000</valUSD>
        <pctVal>0.716101212163</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>RA</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <repurchaseAgrmt>
          <transCat>Repurchase</transCat>
          <clearedCentCparty centralCounterparty="Fixed Income Clearing Corp" isCleared="Y"/>
          <isTriParty>N</isTriParty>
          <repurchaseRt>1.80000000</repurchaseRt>
          <maturityDt>2025-04-01</maturityDt>
          <repurchaseCollaterals>
            <repurchaseCollateral>
              <principalAmt>1417900.00000000</principalAmt>
              <principalCd>USD</principalCd>
              <collateralVal>1444446.86000000</collateralVal>
              <collateralCd>USD</collateralCd>
              <invstCat>UST</invstCat>
            </repurchaseCollateral>
          </repurchaseCollaterals>
        </repurchaseAgrmt>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares Core S&amp;P 500 ETF</name>
        <lei>5493007M4YMN8XL48C14</lei>
        <title>iShares Core S&amp;P 500 ETF</title>
        <cusip>464287200</cusip>
        <identifiers>
          <isin value="US4642872000"/>
        </identifiers>
        <balance>71814.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>40352286.60000000</valUSD>
        <pctVal>20.40667816357</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>iShares Short Treasury Bond ETF</name>
        <lei>549300F8ZJ4IZLOOBP30</lei>
        <title>iShares Short Treasury Bond ETF</title>
        <cusip>464288679</cusip>
        <identifiers>
          <isin value="US4642886794"/>
        </identifiers>
        <balance>241287.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>26652562.02000000</valUSD>
        <pctVal>13.47854858309</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</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>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2025-04-25</ncom:dateSigned>
      <ncom:nameOfApplicant>TRANSAMERICA SERIES TRUST</ncom:nameOfApplicant>
      <ncom:signature>Joshua Durham</ncom:signature>
      <ncom:signerName>Joshua Durham</ncom:signerName>
      <ncom:title>Chief Operating Officer and Interim Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
