<SEC-DOCUMENT>0001140361-18-004512.txt : 20180201
<SEC-HEADER>0001140361-18-004512.hdr.sgml : 20180201
<ACCEPTANCE-DATETIME>20180201193221
ACCESSION NUMBER:		0001140361-18-004512
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180130
FILED AS OF DATE:		20180201
DATE AS OF CHANGE:		20180201

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kingsley Lawrence D
		CENTRAL INDEX KEY:			0001301427

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19271
		FILM NUMBER:		18568292

	MAIL ADDRESS:	
		STREET 1:		C/O IDEX CORPORATION
		STREET 2:		630 DUNDEE ROAD
		CITY:			NORTHBROOK
		STATE:			IL
		ZIP:			60062

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IDEXX LABORATORIES INC /DE
		CENTRAL INDEX KEY:			0000874716
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		IRS NUMBER:				010393723
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE IDEXX DRIVE
		CITY:			WESTBROOK
		STATE:			ME
		ZIP:			04092-2041
		BUSINESS PHONE:		2075560300

	MAIL ADDRESS:	
		STREET 1:		ONE IDEXX DRIVE
		CITY:			WESTBROOK
		STATE:			ME
		ZIP:			04092-2041

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IDEXX CORP / DE
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-01-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000874716</issuerCik>
        <issuerName>IDEXX LABORATORIES INC /DE</issuerName>
        <issuerTradingSymbol>IDXX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001301427</rptOwnerCik>
            <rptOwnerName>Kingsley Lawrence D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O IDEXX LABORATORIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE IDEXX DRIVE</rptOwnerStreet2>
            <rptOwnerCity>WESTBROOK</rptOwnerCity>
            <rptOwnerState>ME</rptOwnerState>
            <rptOwnerZipCode>04092</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-01-30</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>186.59</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3558</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
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    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents deferred stock units acquired pursuant to the IDEXX Laboratories, Inc. Director Deferred Compensation Plan (the &quot;Plan&quot;) in accordance with Rule 16b-3. The number of deferred stock units, rounded up or down to the nearest whole unit, is determined by dividing the amount of cash compensation deferred pursuant to the Plan ($18,659.00) by the closing price of IDEXX Laboratories, Inc. common stock on the date of the deferral, or if no such price is reported for that date, the closing price for the next preceding date for which such price was reported. Each deferred stock unit represents a contingent right to receive one share of IDEXX Laboratories, Inc. common stock. The deferred stock units vest immediately upon grant and are payable only as common stock one year following the Director's resignation from the Board of Directors or on such other nondiscretionary and objectively determinable date(s) selected in accordance with the terms of the Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Lily J. Lu, Attorney-in-Fact for Lawrence D. Kingsley</signatureName>
        <signatureDate>2018-02-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
