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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-01-07</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001829730</issuerCik>
        <issuerName>Switchback II Corp</issuerName>
        <issuerTradingSymbol>SWBK.U</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001782191</rptOwnerCik>
            <rptOwnerName>Stoutner Sam</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5949 SHERRY LANE, SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Class B Ordinary Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7826250</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Class B Ordinary Shares are convertible into Class A Ordinary Shares of the Issuer on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date.</footnote>
        <footnote id="F2">Includes 1,031,250 Class B Ordinary Shares that are subject to forfeiture if the underwriters in the Issuer's initial public offering of units do not exercise their over-allotment option. In addition, upon and subject to the conversion of the Class B Ordinary Shares (as adjusted) into Class A Ordinary Shares at the time of the closing of the Issuer's initial business combination, 25% of such Class A Ordinary Shares shall become subject to potential forfeiture if the triggering event described in the Issuer's registration statement does not occur during the time period between the closing date of the Issuer's initial business combination and the five-year anniversary of such date.</footnote>
        <footnote id="F3">NGP Switchback II, LLC is the record holder of the shares reported herein. Mr. Stoutner is a manager of NGP Switchback II, LLC. As such, Mr. Stoutner may be deemed to have or share beneficial ownership of the ordinary shares held directly by NGP Switchback II, LLC.</footnote>
    </footnotes>

    <remarks>Exhibit List: Exhibit 24.1 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Sam Stoutner, by Jim Mutrie, as Attorney-in-Fact</signatureName>
        <signatureDate>2021-01-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
