<SEC-DOCUMENT>0001029199-20-000006.txt : 20200221
<SEC-HEADER>0001029199-20-000006.hdr.sgml : 20200221
<ACCEPTANCE-DATETIME>20200221141613
ACCESSION NUMBER:		0001029199-20-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200219
FILED AS OF DATE:		20200221
DATE AS OF CHANGE:		20200221

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NEWMAN JEFFREY B
		CENTRAL INDEX KEY:			0001253700

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31648
		FILM NUMBER:		20638956

	MAIL ADDRESS:	
		STREET 1:		C/O EURONET WORLDWIDE, INC.
		STREET 2:		3500 COLLEGE BOULEVARD
		CITY:			LEAWOOD
		STATE:			KS
		ZIP:			66211

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EURONET WORLDWIDE INC
		CENTRAL INDEX KEY:			0001029199
		STANDARD INDUSTRIAL CLASSIFICATION:	FUNCTIONS RELATED TO DEPOSITORY BANKING, NEC [6099]
		IRS NUMBER:				742806888
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3500 COLLEGE BOULEVARD
		CITY:			LEAWOOD
		STATE:			KS
		ZIP:			66211
		BUSINESS PHONE:		913-327-4200

	MAIL ADDRESS:	
		STREET 1:		3500 COLLEGE BOULEVARD
		CITY:			LEAWOOD
		STATE:			KS
		ZIP:			66211

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EURONET SERVICES INC
		DATE OF NAME CHANGE:	19961218
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_158231255494776.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-02-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001029199</issuerCik>
        <issuerName>EURONET WORLDWIDE INC</issuerName>
        <issuerTradingSymbol>EEFT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253700</rptOwnerCik>
            <rptOwnerName>NEWMAN JEFFREY B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O EURONET WORLDWIDE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>3500 COLLEGE BOULEVARD</rptOwnerStreet2>
            <rptOwnerCity>LEAWOOD</rptOwnerCity>
            <rptOwnerState>KS</rptOwnerState>
            <rptOwnerZipCode>66211</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Exec VP and General Counsel</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.02 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2020-02-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>145.76</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11981</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $145.42 to $146.16, inclusive. The Reporting Person undertakes to provide to Euronet Worldwide, Inc., any security holder of Euronet Worldwide, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range referred herein.</footnote>
        <footnote id="F2">Includes an additional 120 shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase plan during Q2 2019, Q3 2019 and Q4 2019.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jeffrey B. Newman</signatureName>
        <signatureDate>2020-02-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
