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    <isConfidential>false</isConfidential>
    <filerInfo>

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


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


    </filerInfo>
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      <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>2025-08-31</repPdEnd>
      <repPdDate>2025-02-28</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
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      <totLiabs>898392.920000000000</totLiabs>
      <netAssets>482859584.420000000000</netAssets>
      <assetsAttrMiscSec>0.000000000000</assetsAttrMiscSec>
      <assetsInvested>0.000000000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.000000000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.000000000000</amtPayOneYrCtrldComp>
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      <isNonCashCollateral>N</isNonCashCollateral>
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        <othMon2 netRealizedGain="296970.9700" netUnrealizedAppr="14171485.4700"/>
        <othMon3 netRealizedGain="2462201.7500" netUnrealizedAppr="-7526490.9800"/>
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        <title>Avantis Emerging Markets Small Cap Equity ETF</title>
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        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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        <name>State Street Navigator Securities Lending Trust - State Street Navigator Securities Lending Government Money Market Portfolio</name>
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        <name>Avantis US Mid Cap Value ETF</name>
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        <name>State Street Institutional US Government Money Market Fund</name>
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        <name>Avantis U.S. Small Cap Value ETF</name>
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        <title>Avantis Real Estate ETF</title>
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        <title>Avantis International Large Cap Value ETF</title>
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      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-04-18</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>
</edgarSubmission>
