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    <isConfidential>false</isConfidential>
    <filerInfo>

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


      <seriesClassInfo>
        <seriesId>S000053165</seriesId>
        <classId>C000167272</classId>
      </seriesClassInfo>


    </filerInfo>
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      <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 50 VP</seriesName>
      <seriesId>S000053165</seriesId>
      <seriesLei>5493005DHS3XEMT7GH18</seriesLei>
      <repPdEnd>2020-12-31</repPdEnd>
      <repPdDate>2020-12-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
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      <totLiabs>16883425.26</totLiabs>
      <netAssets>489056468.41</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>
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      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
      <cshNotRptdInCorD>1656818.98000000</cshNotRptdInCorD>
      <borrowers>
        <borrower aggrVal="7846435.92000000" lei="58PU97L1C0WSRCWADL48" name="Jefferies LLC"/>
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      </borrowers>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000167272" rtn1="-1.63000000" rtn2="6.15000000" rtn3="1.71000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="1427571.42000000" netUnrealizedAppr="-8873906.25000000"/>
        <othMon2 netRealizedGain="190246.22000000" netUnrealizedAppr="26722099.37000000"/>
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      <mon1Flow redemption="1056629.95000000" reinvestment="0.00000000" sales="11742282.74000000"/>
      <mon2Flow redemption="1516328.35000000" reinvestment="0.00000000" sales="9846873.17000000"/>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <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"/>
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        <balance>232531.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>14202993.48000000</valUSD>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <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>
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          <isin value="US8574927062"/>
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        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>8028732.00000000</valUSD>
        <pctVal>1.641677908095</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="8028732.00000000" 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"/>
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        <balance>592114.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>40192698.32000000</valUSD>
        <pctVal>8.218416668871</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 Value Factor ETF</name>
        <lei>549300QCMVXVCAPD3O82</lei>
        <title>iShares MSCI USA Value Factor ETF</title>
        <cusip>46432F388</cusip>
        <identifiers>
          <isin value="US46432F3881"/>
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        <balance>508246.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>44171659.86000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <loanByFundCondition isLoanByFund="Y" loanVal="25812.27000000"/>
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      </invstOrSec>
      <invstOrSec>
        <name>iShares MSCI EAFE Min Vol Factor ETF</name>
        <lei>549300N5K4JSWEZ74544</lei>
        <title>iShares MSCI EAFE Min Vol Factor ETF</title>
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          <isin value="US46429B6891"/>
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        <curCd>USD</curCd>
        <valUSD>47114538.00000000</valUSD>
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        <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"/>
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        <balance>364507.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>42359358.47000000</valUSD>
        <pctVal>8.661445294388</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>
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          <isin value="US46432F3964"/>
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        <balance>256150.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>41314433.50000000</valUSD>
        <pctVal>8.447783879501</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="7846435.92000000"/>
        </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>249770.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>27766930.90000000</valUSD>
        <pctVal>5.677653337307</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>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>
