<?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>S000053167</seriesId>
        <classId>C000167274</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 Edge 100 VP</seriesName>
      <seriesId>S000053167</seriesId>
      <seriesLei>5493001TEO1QZIKFBV97</seriesLei>
      <repPdEnd>2020-12-31</repPdEnd>
      <repPdDate>2020-12-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>90503880.83</totAssets>
      <totLiabs>1831606.21</totLiabs>
      <netAssets>88672274.62</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>224475.56000000</cshNotRptdInCorD>
      <borrowers>
        <borrower aggrVal="590988.00000000" lei="4ZHCHI4KYZG2WVRT8631" name="Macquarie Bank Limited"/>
        <borrower aggrVal="44468.00000000" lei="549300RA02N3BNSWBV74" name="Virtu Americas LLC"/>
        <borrower aggrVal="6788.00000000" lei="549300CSX55MXZ47EI78" name="Wedbush Securities Inc."/>
        <borrower aggrVal="209677.00000000" lei="VYVVCKR63DVZZN70PB21" name="Wells Fargo Securities, LLC"/>
      </borrowers>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000167274" rtn1="-2.58000000" rtn2="11.04000000" rtn3="3.27000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="450583.21000000" netUnrealizedAppr="-2491537.51000000"/>
        <othMon2 netRealizedGain="198129.02000000" netUnrealizedAppr="8349139.14000000"/>
        <othMon3 netRealizedGain="0.00000000" netUnrealizedAppr="2481940.03000000"/>
      </returnInfo>
      <mon1Flow redemption="818181.85000000" reinvestment="0.00000000" sales="802850.34000000"/>
      <mon2Flow redemption="880333.67000000" reinvestment="0.00000000" sales="318083.82000000"/>
      <mon3Flow redemption="252257.23000000" reinvestment="0.00000000" sales="1211066.84000000"/>


    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>iShares MSCI Emerging Markets Min Vol Factor ETF</name>
        <lei>XWXMX00WTU4PW8BLTO28</lei>
        <title>iShares MSCI Emerging Markets Min Vol Factor ETF</title>
        <cusip>464286533</cusip>
        <identifiers>
          <isin value="US4642865335"/>
        </identifiers>
        <balance>75604.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4617892.32000000</valUSD>
        <pctVal>5.207819851007</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>857492706</cusip>
        <identifiers>
          <isin value="US8574927062"/>
        </identifiers>
        <balance>864325.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>864325.00000000</valUSD>
        <pctVal>0.974740981557</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="864325.00000000" isCashCollateral="Y"/>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI USA Min Vol Factor ETF</name>
        <lei>54930006KUZN6GLGL496</lei>
        <title>iShares MSCI USA Min Vol Factor ETF</title>
        <cusip>46429B697</cusip>
        <identifiers>
          <isin value="US46429B6974"/>
        </identifiers>
        <balance>202454.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>13742577.52000000</valUSD>
        <pctVal>15.49816735715</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="6788.00000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI USA Value Factor ETF</name>
        <lei>549300QCMVXVCAPD3O82</lei>
        <title>iShares MSCI USA Value Factor ETF</title>
        <cusip>46432F388</cusip>
        <identifiers>
          <isin value="US46432F3881"/>
        </identifiers>
        <balance>171058.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>14866650.78000000</valUSD>
        <pctVal>16.76583897696</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="590988.00000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI EAFE Min Vol Factor ETF</name>
        <lei>549300N5K4JSWEZ74544</lei>
        <title>iShares MSCI EAFE Min Vol Factor ETF</title>
        <cusip>46429B689</cusip>
        <identifiers>
          <isin value="US46429B6891"/>
        </identifiers>
        <balance>225748.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>16572160.68000000</valUSD>
        <pctVal>18.68922473345</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 USA Quality Factor ETF</name>
        <lei>5493007KMK0CQLE2O168</lei>
        <title>iShares MSCI USA Quality Factor ETF</title>
        <cusip>46432F339</cusip>
        <identifiers>
          <isin value="US46432F3394"/>
        </identifiers>
        <balance>127264.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>14789349.44000000</valUSD>
        <pctVal>16.67866252825</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 USA Momentum Factor ETF</name>
        <lei>5493002ZOOZ0SN3YYI81</lei>
        <title>iShares MSCI USA Momentum Factor ETF</title>
        <cusip>46432F396</cusip>
        <identifiers>
          <isin value="US46432F3964"/>
        </identifiers>
        <balance>88909.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>14340132.61000000</valUSD>
        <pctVal>16.17205904715</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="209677.00000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI USA Size Factor ETF</name>
        <lei>5493007FX38U4LSCPO86</lei>
        <title>iShares MSCI USA Size Factor ETF</title>
        <cusip>46432F370</cusip>
        <identifiers>
          <isin value="US46432F3709"/>
        </identifiers>
        <balance>86471.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>9612981.07000000</valUSD>
        <pctVal>10.84102230510</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="44468.00000000"/>
        </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>2021-01-22</ncom:dateSigned>
      <ncom:nameOfApplicant>TRANSAMERICA SERIES TRUST</ncom:nameOfApplicant>
      <ncom:signature>Vincent Toner</ncom:signature>
      <ncom:signerName>Vincent Toner</ncom:signerName>
      <ncom:title>Treasurer</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
