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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>Dimensional VA Equity Allocation Portfolio</seriesName>
      <seriesId>S000057540</seriesId>
      <seriesLei>549300A3CCCW0GBTZG93</seriesLei>
      <repPdEnd>2026-10-31</repPdEnd>
      <repPdDate>2026-01-31</repPdDate>
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      <totLiabs>26158.98</totLiabs>
      <netAssets>284340764.66</netAssets>
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      <assetsInvested>0.00000000</assetsInvested>
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      <liquidPref>0.00000000</liquidPref>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>DFA US Core Equity 1 Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Emerging Markets Core Equity 2 Portfolio</name>
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        <title>Emerging Markets Core Equity 2 Portfolio</title>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
      <invstOrSec>
        <name>DFA VA International Small Portfolio</name>
        <lei>549300L65QJ1CSWCQP78</lei>
        <title>Dimensional VA International Small Portfolio</title>
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        <name>DFA VA International Value Portfolio</name>
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        <name>DFA VA U.S. Targeted Value Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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      </invstOrSec>
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        <name>DFA VA U.S. Large Value Portfolio</name>
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        <title>Dimensional  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 Real Estate Securities Portfolio</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>DFA US Large Company Portfolio</name>
        <lei>549300FK54SMFUX28R78</lei>
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          <isin value="US25434D8231"/>
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        <curCd>USD</curCd>
        <valUSD>64173561.54000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      </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>2026-02-26</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>
  <documents>XXXX</documents>
</edgarSubmission>
