<?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>S000042775</seriesId>
        <classId>C000132312</classId>
        <classId>C000132313</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 Multi-Manager Alternative Strategies VP</seriesName>
      <seriesId>S000042775</seriesId>
      <seriesLei>549300CGMGKYBBDJU150</seriesLei>
      <repPdEnd>2019-12-31</repPdEnd>
      <repPdDate>2019-09-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>4366019.94</totAssets>
      <totLiabs>13373.51</totLiabs>
      <netAssets>4352646.43</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>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000132313" rtn1="0.50000000" rtn2="0.23000000" rtn3="-0.70000000"/>
          <monthlyTotReturn classId="C000132312" rtn1="0.31000000" rtn2="0.03000000" rtn3="-0.72000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="-0.38000000" netUnrealizedAppr="19119.14000000"/>
        <othMon2 netRealizedGain="745.50000000" netUnrealizedAppr="4624.17000000"/>
        <othMon3 netRealizedGain="0.00000000" netUnrealizedAppr="-34454.87000000"/>
      </returnInfo>
      <mon1Flow redemption="12253.50000000" reinvestment="0.00000000" sales="184551.72000000"/>
      <mon2Flow redemption="70160.58000000" reinvestment="30039.77000000" sales="327192.59000000"/>
      <mon3Flow redemption="40580.43000000" reinvestment="0.00000000" sales="140148.90000000"/>


    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>TRANSAMERICA LONG/SHORT STRATE TA LONG/SHORT STRATEGY CL I2</name>
        <lei>549300JX12CH3JMMOU87</lei>
        <title>Transamerica Long/Short Strategy</title>
        <cusip>893962662</cusip>
        <identifiers>
          <isin value="US8939626623"/>
        </identifiers>
        <balance>72346.46600000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>452165.41000000</valUSD>
        <pctVal>10.38828715522</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>TRANSAMERICA GLOBAL REAL ESTAT TRANSAMERICA GL R/E SEC I2</name>
        <lei>549300DEE4I8BPYC7517</lei>
        <title>Transamerica Global Real Estate Securities</title>
        <cusip>893961623</cusip>
        <identifiers>
          <isin value="US8939616236"/>
        </identifiers>
        <balance>10065.36100000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>151383.03000000</valUSD>
        <pctVal>3.477953756055</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>TRANSAMERICA EVENT DRIVEN TRANSAM EVENT DRIVEN I2</name>
        <lei>549300B3VDNNUJ0ERX70</lei>
        <title>Transamerica Event Driven</title>
        <cusip>89354D742</cusip>
        <identifiers>
          <isin value="US89354D7425"/>
        </identifiers>
        <balance>46515.73900000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>483763.69000000</valUSD>
        <pctVal>11.11424274358</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>TRANSAMERICA UNCONSTRAINED BON TRANSAMERICA UNCONST BND I2</name>
        <lei>54930000WQFBEX4N7U31</lei>
        <title>Transamerica Unconstrained Bond Fund</title>
        <cusip>89355J243</cusip>
        <identifiers>
          <isin value="US89355J2437"/>
        </identifiers>
        <balance>78764.86200000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>775833.89000000</valUSD>
        <pctVal>17.82441791395</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>TRANSAMERICA EMERGING MARKETS TRANSAM EMER MKTS DBT I2</name>
        <lei>549300UOGL5KQ4NPEX35</lei>
        <title>Transamerica Emerging Markets Debt Fund</title>
        <cusip>893509141</cusip>
        <identifiers>
          <isin value="US8935091418"/>
        </identifiers>
        <balance>27111.18600000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>280871.89000000</valUSD>
        <pctVal>6.452899276728</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>TRANSAMERICA INFLATION OPPORTU TRANSAM INFLATION OPPORT I2</name>
        <lei>54930063RIQTGVT8N429</lei>
        <title>Transamerica Inflation Opportunities</title>
        <cusip>89354D841</cusip>
        <identifiers>
          <isin value="US89354D8415"/>
        </identifiers>
        <balance>41924.62500000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>432662.13000000</valUSD>
        <pctVal>9.940208490584</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>SPDR S&amp;P 500 ETF Trust</name>
        <lei>549300NZAMSJ8FXPQQ63</lei>
        <title>SPDR S&amp;P 500 ETF Trust</title>
        <cusip>78462F103</cusip>
        <identifiers>
          <isin value="US78462F1030"/>
        </identifiers>
        <balance>167.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>49560.59000000</valUSD>
        <pctVal>1.138631193620</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>TRANSAMERICA HIGH YIELD BD TA HIGH YIELD BOND CL I2</name>
        <lei>549300E2RRC6XIJ79123</lei>
        <title>Transamerica High Yield Bond</title>
        <cusip>893961367</cusip>
        <identifiers>
          <isin value="US8939613670"/>
        </identifiers>
        <balance>16655.92800000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>151902.06000000</valUSD>
        <pctVal>3.489878225647</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>TRANSAMERICA FUNDS TRANSAMERIC TRANSAMERICA MGD FUT STR I2</name>
        <lei>UYK7DNW28Z3G120Z2E32</lei>
        <title>Transamerica Funds-Transamerica Managed Futures Strategy</title>
        <cusip>893509299</cusip>
        <identifiers>
          <isin value="US8935092994"/>
        </identifiers>
        <balance>60426.09600000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>453195.72000000</valUSD>
        <pctVal>10.41195804181</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>TRANSAMERICA MLP + ENERGY INCO TRANSAM MLP + ENER I2</name>
        <lei>5493004X52ZOBDUA4276</lei>
        <title>Transamerica MLP &amp; Energy Income</title>
        <cusip>89355J482</cusip>
        <identifiers>
          <isin value="US89355J4821"/>
        </identifiers>
        <balance>17907.29400000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>119799.80000000</valUSD>
        <pctVal>2.752343934354</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 INC CLEARING CORP.REPO</name>
        <lei>549300H47WTHXPU08X20</lei>
        <title>FIXED INC CLEARING CORP.REPO</title>
        <cusip>000000000</cusip>
        <identifiers>
          <other otherDesc="Internal Identifier" value="85748R009"/>
        </identifiers>
        <balance>198683.86000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>198683.86000000</valUSD>
        <pctVal>4.564668028870</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 INC CLEARING CORP.REPO" isCleared="Y"/>
          <isTriParty>N</isTriParty>
          <repurchaseRt>1.05000000</repurchaseRt>
          <maturityDt>2019-10-01</maturityDt>
          <repurchaseCollaterals>
            <repurchaseCollateral>
              <principalAmt>205000.00000000</principalAmt>
              <principalCd>USD</principalCd>
              <collateralVal>204277.63125000</collateralVal>
              <collateralCd>USD</collateralCd>
              <invstCat>UST</invstCat>
            </repurchaseCollateral>
          </repurchaseCollaterals>
        </repurchaseAgrmt>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>TRANSAMERICA EMERGING MARKETS TRANSAM EMERG MKTS EQTY I2</name>
        <lei>549300KIISUL7GFWS593</lei>
        <title>Transamerica Emerging Markets Equity</title>
        <cusip>89355J854</cusip>
        <identifiers>
          <isin value="US89355J8541"/>
        </identifiers>
        <balance>16806.89800000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>160001.67000000</valUSD>
        <pctVal>3.675962947442</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>TRANSAMERICA CORE BD TRANSAMERICA CORE BD CL I2</name>
        <lei>549300X2MQP8EJ7WT185</lei>
        <title>Transamerica Core Bond</title>
        <cusip>893962423</cusip>
        <identifiers>
          <isin value="US8939624230"/>
        </identifiers>
        <balance>6698.99800000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>68731.72000000</valUSD>
        <pctVal>1.579078868576</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>TRANSAMERICA GLOBAL MULTIFACTO TRANSAMER GL MULTIF MAC I2</name>
        <lei>549300QHZW7YU6DBCN61</lei>
        <title>Transamerica Global Multifactor Macro</title>
        <cusip>89354D718</cusip>
        <identifiers>
          <isin value="US89354D7185"/>
        </identifiers>
        <balance>63575.95200000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>583627.24000000</valUSD>
        <pctVal>13.40856073163</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>2019-10-29</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>
  <documents>XXXX</documents>
</edgarSubmission>
