<?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">
  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0001710607</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000077486</seriesId>
        <classId>C000237947</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>American Century ETF Trust</regName>
      <regFileNumber>811-23305</regFileNumber>
      <regCik>0001710607</regCik>
      <regLei>5493006IKK34YJD98183</regLei>
      <regStreet1>4500 Main St</regStreet1>
      <regCity>Kansas City</regCity>
      <regStateConditional regCountry="US" regState="US-MO"/>
      <regZipOrPostalCode>64111</regZipOrPostalCode>
      <regPhone>816-531-5575</regPhone>
      <seriesName>Avantis All Equity Markets ETF</seriesName>
      <seriesId>S000077486</seriesId>
      <seriesLei>549300EKRJD6FEGTCU68</seriesLei>
      <repPdEnd>2026-08-31</repPdEnd>
      <repPdDate>2025-11-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>659778821.800000000000</totAssets>
      <totLiabs>52232.090000000000</totLiabs>
      <netAssets>659726589.710000000000</netAssets>
      <assetsAttrMiscSec>0.000000000000</assetsAttrMiscSec>
      <assetsInvested>0.000000000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.000000000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.000000000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.000000000000</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0.000000000000</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0.000000000000</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0.000000000000</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0.000000000000</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0.000000000000</amtPayAftOneYrOther>
      <delayDeliv>0.000000000000</delayDeliv>
      <standByCommit>0.000000000000</standByCommit>
      <liquidPref>0.000000000000</liquidPref>
      <cshNotRptdInCorD>0.000000000000</cshNotRptdInCorD>
      <borrowers>
        <borrower aggrVal="13389.000000000000" lei="T6FIZBDPKLYJKFCRVK44" name="UBS SECURITIES LLC"/>
        <borrower aggrVal="22396.500000000000" lei="549300BLWPABP1VNME36" name="SCOTIA CAPITAL (USA) INC."/>
      </borrowers>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000237947" rtn1="2.380592697944" rtn2="0.949745199090" rtn3="1.518938003040"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="0.0000" netUnrealizedAppr="13032674.8400"/>
        <othMon2 netRealizedGain="70041.2600" netUnrealizedAppr="5932683.1800"/>
        <othMon3 netRealizedGain="0.0000" netUnrealizedAppr="9875381.1700"/>
      </returnInfo>
      <mon1Flow redemption="0.0000" reinvestment="0.0000" sales="14627624.5000"/>
      <mon2Flow redemption="206287.7500" reinvestment="0.0000" sales="7942041.0000"/>
      <mon3Flow redemption="0.0000" reinvestment="0.0000" sales="10735890.2500"/>



    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>Avantis US Large Cap Value ETF</name>
        <lei>549300F1U7C6RG7BQE89</lei>
        <title>Avantis US Large Cap Value ETF</title>
        <cusip>025072349</cusip>
        <identifiers>
          <isin value="US0250723493"/>
          <ticker value="AVLV"/>
          <other otherDesc="SEDOL" value="BLD3JH2"/>
        </identifiers>
        <balance>1297087.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>96834029.9900000000</valUSD>
        <pctVal>14.6779031648</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="22396.500000000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Avantis Real Estate ETF</name>
        <lei>549300184FP34KECOZ73</lei>
        <title>Avantis Real Estate ETF</title>
        <cusip>025072356</cusip>
        <identifiers>
          <isin value="US0250723568"/>
          <ticker value="AVRE"/>
          <other otherDesc="SEDOL" value="BLD3JG1"/>
        </identifiers>
        <balance>367367.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>16395589.2100000000</valUSD>
        <pctVal>2.4852097014</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="13389.000000000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State Street Navigator Securities Lending Trust - State Street Navigator Securities Lending Government Money Market Portfolio</name>
        <lei>5493008BJIBKQ5KTIF74</lei>
        <title>State Street Navigator Securities Lending Government Money Market Portfolio</title>
        <cusip>N/A</cusip>
        <identifiers>
          <other otherDesc="Series ID" value="S000009767"/>
        </identifiers>
        <balance>36450.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>36450.0000000000</valUSD>
        <pctVal>0.0055250161</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="36450.000000000000" isCashCollateral="Y"/>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Avantis US Mid Cap Equity ETF</name>
        <lei>254900OJWEFYZP17TZ78</lei>
        <title>Avantis US Mid Cap Equity ETF</title>
        <cusip>025072125</cusip>
        <identifiers>
          <isin value="US0250721257"/>
          <ticker value="AVMC"/>
          <other otherDesc="SEDOL" value="BMH6QX9"/>
        </identifiers>
        <balance>124311.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>8780384.2800000000</valUSD>
        <pctVal>1.3309125958</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>Avantis US Mid Cap Value ETF</name>
        <lei>254900XXC1FJTSL2OV23</lei>
        <title>Avantis US Mid Cap Value ETF</title>
        <cusip>025072133</cusip>
        <identifiers>
          <isin value="US0250721331"/>
          <ticker value="AVMV"/>
          <other otherDesc="SEDOL" value="BMH6RF8"/>
        </identifiers>
        <balance>125884.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>8850702.6300000000</valUSD>
        <pctVal>1.3415713067</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 Institutional US Government Money Market Fund</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
        <title>State Street Institutional US Government Money Market Fund</title>
        <cusip>857492706</cusip>
        <identifiers>
          <isin value="US8574927062"/>
          <ticker value="GVMXX"/>
          <other otherDesc="SEDOL" value="B284MN4"/>
        </identifiers>
        <balance>559079.4800000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>559079.4800000000</valUSD>
        <pctVal>0.0847441181</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</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>Avantis International Small Cap Value ETF</name>
        <lei>549300IHSLZS0JQXM287</lei>
        <title>Avantis International Small Cap Value ETF</title>
        <cusip>025072802</cusip>
        <identifiers>
          <isin value="US0250728021"/>
          <ticker value="AVDV"/>
          <other otherDesc="SEDOL" value="BKDZSL8"/>
        </identifiers>
        <balance>91631.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>8493277.3900000000</valUSD>
        <pctVal>1.2873935237</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>Avantis U.S. Small Cap Value ETF</name>
        <lei>549300OVTYY3CGRMI219</lei>
        <title>Avantis U.S. Small Cap Value ETF</title>
        <cusip>025072877</cusip>
        <identifiers>
          <isin value="US0250728773"/>
          <ticker value="AVUV"/>
          <other otherDesc="SEDOL" value="BKDZSM9"/>
        </identifiers>
        <balance>224889.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>22743024.5700000000</valUSD>
        <pctVal>3.4473409022</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>Avantis US Equity ETF</name>
        <lei>54930069ENIYWNS5S829</lei>
        <title>Avantis US Equity ETF</title>
        <cusip>025072885</cusip>
        <identifiers>
          <isin value="US0250728856"/>
          <ticker value="AVUS"/>
          <other otherDesc="SEDOL" value="BKDZX91"/>
        </identifiers>
        <balance>2568888.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>286302567.6000000000</valUSD>
        <pctVal>43.3971545282</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>Avantis Emerging Markets Small Cap Equity ETF</name>
        <lei>254900VFCHULAYTYFO84</lei>
        <title>Avantis Emerging Markets Small Cap Equity ETF</title>
        <cusip>025072141</cusip>
        <identifiers>
          <isin value="US0250721414"/>
          <ticker value="AVEE"/>
          <other otherDesc="SEDOL" value="BMH6QW8"/>
        </identifiers>
        <balance>99939.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6323260.4600000000</valUSD>
        <pctVal>0.9584668192</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>Avantis International Small Cap Equity ETF</name>
        <lei>5493000AO0EMAL4FQI54</lei>
        <title>Avantis International Small Cap Equity ETF</title>
        <cusip>025072190</cusip>
        <identifiers>
          <isin value="US0250721901"/>
          <other otherDesc="SEDOL" value="BMB3RW2"/>
        </identifiers>
        <balance>104068.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7154966.3900000000</valUSD>
        <pctVal>1.0845350940</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>Avantis US Small Cap Equity ETF</name>
        <lei>549300DVD8GTQW8VMC57</lei>
        <title>Avantis US Small Cap Equity ETF</title>
        <cusip>025072323</cusip>
        <identifiers>
          <isin value="US0250723238"/>
          <ticker value="AVSC"/>
          <other otherDesc="SEDOL" value="BP4DR19"/>
        </identifiers>
        <balance>365258.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>21360287.8400000000</valUSD>
        <pctVal>3.2377485118</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>Avantis International Large Cap Value ETF</name>
        <lei>549300DIIN0FEK4WZC47</lei>
        <title>Avantis International Large Cap Value ETF</title>
        <cusip>025072364</cusip>
        <identifiers>
          <isin value="US0250723642"/>
          <ticker value="AVIV"/>
          <other otherDesc="SEDOL" value="BLD3JF0"/>
        </identifiers>
        <balance>529507.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>36943703.3900000000</valUSD>
        <pctVal>5.5998505997</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>Avantis Emerging Markets Value ETF</name>
        <lei>549300W1BVGFQ4AEIV67</lei>
        <title>Avantis Emerging Markets Value ETF</title>
        <cusip>025072372</cusip>
        <identifiers>
          <isin value="US0250723725"/>
          <ticker value="AVES"/>
          <other otherDesc="SEDOL" value="BLD3J94"/>
        </identifiers>
        <balance>400623.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>23248152.6900000000</valUSD>
        <pctVal>3.5239071841</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>Avantis Emerging Markets Equity ETF</name>
        <lei>549300FLNHJ0Y6F35177</lei>
        <title>Avantis Emerging Markets Equity ETF</title>
        <cusip>025072604</cusip>
        <identifiers>
          <isin value="US0250726041"/>
          <ticker value="AVEM"/>
          <other otherDesc="SEDOL" value="BKDZSJ6"/>
        </identifiers>
        <balance>556969.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>42775219.2000000000</valUSD>
        <pctVal>6.4837797759</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>Avantis International Equity ETF</name>
        <lei>549300J3U01FFJ07XD39</lei>
        <title>Avantis International Equity ETF</title>
        <cusip>025072703</cusip>
        <identifiers>
          <isin value="US0250727031"/>
          <ticker value="AVDE"/>
          <other otherDesc="SEDOL" value="BKDZSK7"/>
        </identifiers>
        <balance>901473.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>72974239.3500000000</valUSD>
        <pctVal>11.0612851579</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>
    <signature>
      <ncom:dateSigned>2026-01-27</ncom:dateSigned>
      <ncom:nameOfApplicant>American Century ETF Trust</ncom:nameOfApplicant>
      <ncom:signature>Amy R. Bitter</ncom:signature>
      <ncom:signerName>Amy R. Bitter</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
