<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/npx" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>N-PX</submissionType>
    <filerInfo>
      <registrantType>RMIC</registrantType>
      <liveTestFlag>LIVE</liveTestFlag>
      <filer>
        <issuerCredentials>
          <cik>0001710607</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>
      <flags>
        <overrideInternetFlag>false</overrideInternetFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
      </flags>
      <investmentCompanyType>N-1A</investmentCompanyType>
      <periodOfReport>06/30/2025</periodOfReport>
    </filerInfo>
    <seriesClass>
      <reportSeriesClass>
        <rptSeriesClassInfo>
          <seriesId>S000063026</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000066454</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000066458</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000066460</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000066462</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000069305</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000069308</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000072411</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000074835</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000075383</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000083426</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000085330</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
        <rptSeriesClassInfo>
          <seriesId>S000085331</seriesId>
          <includeAllClassesFlag>true</includeAllClassesFlag>
        </rptSeriesClassInfo>
      </reportSeriesClass>
    </seriesClass>
  </headerData>
  <formData>
    <coverPage>
      <yearOrQuarter>YEAR</yearOrQuarter>
      <reportCalendarYear>2025</reportCalendarYear>
      <reportingPerson>
        <name>American Century ETF Trust</name>
        <phoneNumber>816-531-5575</phoneNumber>
        <address>
          <com:street1>4500 Main Street</com:street1>
          <com:city>Kansas City</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>64111</com:zipCode>
        </address>
      </reportingPerson>
      <agentForService>
        <name>John Pak</name>
        <address>
          <com:street1>4500 Main Street</com:street1>
          <com:city>Kansas City</com:city>
          <com:stateOrCountry>MO</com:stateOrCountry>
          <com:zipCode>64111</com:zipCode>
        </address>
      </agentForService>
      <reportInfo>
        <reportType>FUND VOTING REPORT</reportType>
        <confidentialTreatment>N</confidentialTreatment>
      </reportInfo>
      <fileNumber>811-23305</fileNumber>
      <explanatoryInformation>
        <explanatoryChoice>N</explanatoryChoice>
      </explanatoryInformation>
    </coverPage>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
    </summaryPage>
    <seriesPage>
      <seriesCount>13</seriesCount>
      <seriesDetails>
        <seriesReports>
          <idOfSeries>S000063026</idOfSeries>
          <nameOfSeries>American Century Diversified Municipal Bond ETF</nameOfSeries>
          <leiOfSeries>5493000EB9FT0YZGSH76</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000066454</idOfSeries>
          <nameOfSeries>Avantis Emerging Markets Equity ETF</nameOfSeries>
          <leiOfSeries>549300FLNHJ0Y6F35177</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000066458</idOfSeries>
          <nameOfSeries>Avantis U.S. Equity ETF</nameOfSeries>
          <leiOfSeries>54930069ENIYWNS5S829</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000066460</idOfSeries>
          <nameOfSeries>Avantis U.S. Equity Fund</nameOfSeries>
          <leiOfSeries>549300UZ4JRFVRG23179</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000066462</idOfSeries>
          <nameOfSeries>Avantis Emerging Markets Equity Fund</nameOfSeries>
          <leiOfSeries>5493000ITBOJX682OK28</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000069305</idOfSeries>
          <nameOfSeries>Avantis Core Municipal Fixed Income ETF</nameOfSeries>
          <leiOfSeries>5493004G8C03VW5P4F75</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000069308</idOfSeries>
          <nameOfSeries>Avantis Core Municipal Fixed Income Fund</nameOfSeries>
          <leiOfSeries>5493001XQYUQL1SCNK69</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000072411</idOfSeries>
          <nameOfSeries>American Century Emerging Markets Bond ETF</nameOfSeries>
          <leiOfSeries>549300J9BEYJXTZ7JN05</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000074835</idOfSeries>
          <nameOfSeries>Avantis U.S. Small Cap Equity ETF</nameOfSeries>
          <leiOfSeries>549300DVD8GTQW8VMC57</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000075383</idOfSeries>
          <nameOfSeries>Avantis Responsible U.S. Equity ETF</nameOfSeries>
          <leiOfSeries>549300N2OZFPVHY46D29</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000083426</idOfSeries>
          <nameOfSeries>Avantis Credit ETF</nameOfSeries>
          <leiOfSeries>254900AR5516E7HDUC85</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000085330</idOfSeries>
          <nameOfSeries>American Century California Municipal Bond ETF</nameOfSeries>
          <leiOfSeries>254900SECH1HRR3W0D53</leiOfSeries>
        </seriesReports>
        <seriesReports>
          <idOfSeries>S000085331</idOfSeries>
          <nameOfSeries>Avantis U.S. Small Cap Equity Fund</nameOfSeries>
          <leiOfSeries>254900XOVTHX6ZZP8579</leiOfSeries>
        </seriesReports>
      </seriesDetails>
    </seriesPage>
    <signaturePage>
      <reportingPerson>American Century ETF Trust</reportingPerson>
      <txSignature>Patrick Bannigan</txSignature>
      <txPrintedSignature>Patrick Bannigan</txPrintedSignature>
      <txTitle>President</txTitle>
      <txAsOfDate>08/27/2025</txAsOfDate>
    </signaturePage>
  </formData>
</edgarSubmission>
