<?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>2026-05-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>984933390.260000000000</totAssets>
      <totLiabs>24246.070000000000</totLiabs>
      <netAssets>984909144.190000000000</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>
      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000237947" rtn1="-5.381148873865" rtn2="8.561124995880" rtn3="3.629760455283"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="918831.2700" netUnrealizedAppr="-46574505.4800"/>
        <othMon2 netRealizedGain="0.0000" netUnrealizedAppr="69660718.7200"/>
        <othMon3 netRealizedGain="0.0000" netUnrealizedAppr="33904906.6400"/>
      </returnInfo>
      <mon1Flow redemption="2433622.0000" reinvestment="0.0000" sales="29140410.5000"/>
      <mon2Flow redemption="0.0000" reinvestment="0.0000" sales="57798197.7500"/>
      <mon3Flow redemption="0.0000" reinvestment="0.0000" sales="26625499.7500"/>



    </fundInfo>
    <invstOrSecs>
      <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>167900.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>13304396.0000000000</valUSD>
        <pctVal>1.3508247008</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>128955.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>9204807.9000000000</valUSD>
        <pctVal>0.9345844695</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>131687.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>10475700.8500000000</valUSD>
        <pctVal>1.0636210367</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>481824.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>33183218.8800000000</valUSD>
        <pctVal>3.3691654784</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 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>1659812.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>149847827.3600000000</valUSD>
        <pctVal>15.2143807623</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 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>567018.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>26916344.4600000000</valUSD>
        <pctVal>2.7328758819</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>666107.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>53181982.8800000000</valUSD>
        <pctVal>5.3996841428</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>502692.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>34037275.3200000000</valUSD>
        <pctVal>3.4558797145</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>705076.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>68350067.4400000000</valUSD>
        <pctVal>6.9397332580</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>1140176.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>104497130.4000000000</valUSD>
        <pctVal>10.6098243697</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 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>111574.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>12297686.2800000000</valUSD>
        <pctVal>1.2486112402</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>285408.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>34263230.4000000000</valUSD>
        <pctVal>3.4788214326</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>3305412.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>421406975.8800000000</valUSD>
        <pctVal>42.7863806896</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 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>167700.0000000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>13184574.0000000000</valUSD>
        <pctVal>1.3386589086</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>761462.5700000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>761462.5700000000</valUSD>
        <pctVal>0.0773129760</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>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2026-07-29</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>
