<SEC-DOCUMENT>0001179110-16-024435.txt : 20160512
<SEC-HEADER>0001179110-16-024435.hdr.sgml : 20160512
<ACCEPTANCE-DATETIME>20160512165656
ACCESSION NUMBER:		0001179110-16-024435
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150826
FILED AS OF DATE:		20160512
DATE AS OF CHANGE:		20160512

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BENCHMARK ELECTRONICS INC
		CENTRAL INDEX KEY:			0000863436
		STANDARD INDUSTRIAL CLASSIFICATION:	PRINTED CIRCUIT BOARDS [3672]
		IRS NUMBER:				742211011
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3000 TECHNOLOGY DRIVE
		CITY:			ANGLETON
		STATE:			TX
		ZIP:			77515
		BUSINESS PHONE:		9798496550

	MAIL ADDRESS:	
		STREET 1:		3000 TECHNOLOGY DR
		CITY:			ANGLETON
		STATE:			TX
		ZIP:			77515

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			COMINOS GREG W
		CENTRAL INDEX KEY:			0001649916

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10560
		FILM NUMBER:		161644723

	MAIL ADDRESS:	
		STREET 1:		3000 TECHNOLOGY DRIVE
		CITY:			ANGLETON
		STATE:			TX
		ZIP:			77515
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3/A -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2015-08-26</periodOfReport>

    <dateOfOriginalSubmission>2015-08-27</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000863436</issuerCik>
        <issuerName>BENCHMARK ELECTRONICS INC</issuerName>
        <issuerTradingSymbol>BHE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001649916</rptOwnerCik>
            <rptOwnerName>COMINOS GREG W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3000 TECHNOLOGY DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ANGLETON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77515</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5451</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">These shares are represented by a restricted stock unit award bearing the right to receive Common Shares and are scheduled to vest in ratable annual installments over a four-year period from the grant date of August 26, 2015.  These shares were inadvertently granted in the form of performance-based restricted stock units with a Performance Period beginning on January 1, 2015 and ending on December 31, 2017, and were reported as such in the reporting person's Form 3 dated August 27, 2015. These shares were also omitted from the Form 4 subsequently filed by the reporting person on February 25, 2016.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Scott Peterson by Power of Attorney for Greg W. Cominos</signatureName>
        <signatureDate>2016-05-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
