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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-06-10</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001841925</issuerCik>
        <issuerName>indie Semiconductor, Inc.</issuerName>
        <issuerTradingSymbol>INDI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001865423</rptOwnerCik>
            <rptOwnerName>Aoki Ichiro</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O INDIE SEMICONDUCTOR</rptOwnerStreet1>
            <rptOwnerStreet2>32 JOURNEY</rptOwnerStreet2>
            <rptOwnerCity>ALISO VIEJO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92656</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock, par value $0.0001</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>633</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class V Common Stock, no par value per share</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6334349</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>ADK Class A Units</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2021-12-10</value>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock, par value $0.0001</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6334349</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the Master Transactions Agreement by and among Thunder Bridge II Surviving Pubco, Inc., Thunder Bridge Acquisition II, Ltd., Ay Dee Kay, LLC d/b/a indie Semiconductor (&quot;ADK&quot;) and certain other parties (dated as of December 14, 2020 and amended as that same date) (the &quot;Agreement&quot;), upon closing the transactions contemplated by the Agreement, the Reporting Person received: (i) 633 shares of Class A common stock, par value $0.0001 per share, of the Issuer (the &quot;Class A Common Stock&quot;); (ii) 6,334,349 shares of Class V Common Stock of the Issuer (the &quot;Class V Common Stock&quot;); and (iii)  6,334,349 newly issued ADK Class A Units (each an &quot;ADK Unit&quot;).</footnote>
        <footnote id="F2">The ADK Units may be exchanged by the Reporting Person at any time after December 10, 2021 for an equal number of shares of Class A Common Stock or, at the election of the Issuer, cash equal to the fair market value of such shares. Upon the Reporting Person's exchange of an ADK Unit for Class A Common Stock, an equivalent number of shares of Class V Common Stock will be canceled.</footnote>
        <footnote id="F3">N/A</footnote>
    </footnotes>

    <remarks>Exhibit List - Exhibit 1 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Ichiro Aoki, by Ellen Bancroft pursuant to power of attorney filed herewith</signatureName>
        <signatureDate>2021-06-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
