<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001776242</cik>
        <entityName>ATAI Life Sciences AG</entityName>
        <issuerAddress>
            <street1>KRAUSENSTRASSE 9-10</street1>
            <city>BERLIN</city>
            <stateOrCountry>2M</stateOrCountry>
            <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
            <zipCode>10117</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>4917632963813</issuerPhoneNumber>
        <jurisdictionOfInc>GERMANY</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2018</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>FLORIAN</firstName>
                <lastName>BRAND</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>KRAUSENSTRASSE 9-10</street1>
                <city>BERLIN</city>
                <stateOrCountry>2M</stateOrCountry>
                <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
                <zipCode>10117</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>CO-FOUNDER AND CEO</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>CHRISTIAN</firstName>
                <lastName>ANGERMAYER</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>KRAUSENSTRASSE 9-10</street1>
                <city>BERLIN</city>
                <stateOrCountry>2M</stateOrCountry>
                <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
                <zipCode>10117</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>FOUNDER</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>LARS</firstName>
                <lastName>WILDE</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>KRAUSENSTRASSE 9-10</street1>
                <city>BERLIN</city>
                <stateOrCountry>2M</stateOrCountry>
                <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
                <zipCode>10117</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>CO-FOUNDER</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>SRINIVAS</firstName>
                <lastName>RAO</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>KRAUSENSTRASSE 9-10</street1>
                <city>BERLIN</city>
                <stateOrCountry>2M</stateOrCountry>
                <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
                <zipCode>10117</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>CO-FOUNDER</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pharmaceuticals</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2020-11-03</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isDebtType>true</isDebtType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>93616029</totalOfferingAmount>
            <totalAmountSold>18138879</totalAmountSold>
            <totalRemaining>75477150</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>24</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>ATAI Life Sciences AG</issuerName>
                <signatureName>FLORIAN BRAND</signatureName>
                <nameOfSigner>FLORIAN BRAND</nameOfSigner>
                <signatureTitle>CO-FOUNDER AND CEO</signatureTitle>
                <signatureDate>2020-12-07</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
