<SUBMISSION>
<ACCESSION-NUMBER>0001144519-21-000181
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20210902
<FILING-DATE>20210907
<DATE-OF-FILING-DATE-CHANGE>20210907
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Dimopoulos Christos
<CIK>0001758115
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-16625
<FILM-NUMBER>211239638
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>C/O BUNGE LIMITED
<STREET2>1391 TIMBERLAKE MANOR PARKWAY
<CITY>CHESTERFIELD
<STATE>MO
<ZIP>63017
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>BUNGELTD
<CIK>0001144519
<ASSIGNED-SIC>2070
<IRS-NUMBER>000000000
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>1391 TIMBERLAKE MANOR PARKWAY
<CITY>CHESTERFIELD
<STATE>MO
<ZIP>63017
<PHONE>314-292-2000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1391 TIMBERLAKE MANOR PARKWAY
<CITY>CHESTERFIELD
<STATE>MO
<ZIP>63017
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>Bunge LTD
<DATE-CHANGED>20050405
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>BUNGE LTD
<DATE-CHANGED>20010710
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_163104644408719.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-09-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001144519</issuerCik>
        <issuerName>BUNGELTD</issuerName>
        <issuerTradingSymbol>BG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001758115</rptOwnerCik>
            <rptOwnerName>Dimopoulos Christos</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BUNGE LIMITED</rptOwnerStreet1>
            <rptOwnerStreet2>1391 TIMBERLAKE MANOR PARKWAY</rptOwnerStreet2>
            <rptOwnerCity>CHESTERFIELD</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Pres., Global Supply Chains</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-09-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>150</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>77.615</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40107.808</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents restricted stock units acquired on September 2, 2021 pursuant to a dividend feature under the registrant's equity incentive plans.</footnote>
        <footnote id="F2">The amount of securities beneficially owned by the reporting person has been adjusted to exclude 245 shares of BG common stock that were overreported on Mr. Dimopoulos's June 2, 2021 Form 4 due to an administrative error.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Drew Yaeger, Attorney-in-Fact</signatureName>
        <signatureDate>2021-09-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
