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    <filerInfo>

      <filer>
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          <cik>0000355437</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000057540</seriesId>
        <classId>C000183437</classId>
      </seriesClassInfo>


    </filerInfo>
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      <regFileNumber>811-03258</regFileNumber>
      <regCik>0000355437</regCik>
      <regLei>549300XGRTBJCE41BD26</regLei>
      <regStreet1>6300 BEE CAVE ROAD</regStreet1>
      <regStreet2>BUILDING ONE</regStreet2>
      <regCity>AUSTIN</regCity>
      <regStateConditional regCountry="US" regState="US-TX"/>
      <regZipOrPostalCode>78746</regZipOrPostalCode>
      <regPhone>512-306-7400</regPhone>
      <seriesName>VA Equity Allocation Portfolio</seriesName>
      <seriesId>S000057540</seriesId>
      <seriesLei>549300A3CCCW0GBTZG93</seriesLei>
      <repPdEnd>2021-10-31</repPdEnd>
      <repPdDate>2021-04-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
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      <totLiabs>248984.03</totLiabs>
      <netAssets>107239333.85</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
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      <amtPayAftOneYrBanksBorr>213800.00000000</amtPayAftOneYrBanksBorr>
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      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
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      <isNonCashCollateral>N</isNonCashCollateral>
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    <invstOrSecs>
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        <name>DFA International Real Estate Securities</name>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>DFA US Large Company Portfolio</name>
        <lei>549300FK54SMFUX28R78</lei>
        <title>DFA US Large Company Portfolio</title>
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        <fairValLevel>1</fairValLevel>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>DFA International Core Equity Portfolio</name>
        <lei>5493006PNAH8EX4MI695</lei>
        <title>DFA International Core Equity Portfolio</title>
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        <fairValLevel>1</fairValLevel>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>DFA US Core Equity 1 Portfolio</name>
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        <title>DFA US Core Equity 1 Portfolio</title>
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      <invstOrSec>
        <name>DFA VA U.S. Large Value Portfolio</name>
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        <title>DFA VA U.S. Large Value Portfolio</title>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
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        <name>DFA VA International Small Portfolio</name>
        <lei>549300L65QJ1CSWCQP78</lei>
        <title>DFA VA International Small Portfolio</title>
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        <units>NS</units>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>DFA Emerging Markets Core Equity Portfolio</name>
        <lei>549300JF8HO6EL9ROR31</lei>
        <title>DFA Emerging Markets Core Equity Portfolio</title>
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        <balance>385751.85500000</balance>
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        <curCd>USD</curCd>
        <valUSD>10114413.64000000</valUSD>
        <pctVal>9.431626695991</pctVal>
        <payoffProfile>Long</payoffProfile>
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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>DFA VA U.S. Targeted Value Portfolio</name>
        <lei>549300FXNLNWXX8GOF08</lei>
        <title>DFA VA U.S. Targeted Value Portfolio</title>
        <cusip>233203710</cusip>
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        <balance>542847.17600000</balance>
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        <curCd>USD</curCd>
        <valUSD>12849192.66000000</valUSD>
        <pctVal>11.98179082124</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>2021-05-18</ncom:dateSigned>
      <ncom:nameOfApplicant>DFA INVESTMENT DIMENSIONS GROUP INC</ncom:nameOfApplicant>
      <ncom:signature>Randy Olson</ncom:signature>
      <ncom:signerName>Randy Olson</ncom:signerName>
      <ncom:title>Vice President</ncom:title>
    </signature>
  </formData>
</edgarSubmission>
