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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001104659-05-018221.txt : 20050426
<SEC-HEADER>0001104659-05-018221.hdr.sgml : 20050426
<ACCEPTANCE-DATETIME>20050426172459
ACCESSION NUMBER:		0001104659-05-018221
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050422
FILED AS OF DATE:		20050426
DATE AS OF CHANGE:		20050426

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ABBOTT LABORATORIES
		CENTRAL INDEX KEY:			0000001800
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				360698440
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 ABBOTT PARK ROAD
		STREET 2:		D-322 AP6D
		CITY:			ABBOTT PARK
		STATE:			IL
		ZIP:			60064-3500
		BUSINESS PHONE:		8479376100

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			AUSTIN ROXANNE S
		CENTRAL INDEX KEY:			0001061632

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02189
		FILM NUMBER:		05774019

	MAIL ADDRESS:	
		STREET 1:		200 N SEPULVEDA BLVD
		STREET 2:		PO BOX 956 MS ES/001/A102
		CITY:			EL SEGUNDO
		STATE:			CA
		ZIP:			90245
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-04-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000001800</issuerCik>
        <issuerName>ABBOTT LABORATORIES</issuerName>
        <issuerTradingSymbol>ABT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001061632</rptOwnerCik>
            <rptOwnerName>AUSTIN ROXANNE S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>30 PELICAN CREST DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEWPORT COAST</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92657</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares without par value</value>
            </securityTitle>
            <transactionDate>
                <value>2005-04-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1889</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8733</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These are restricted stock units awarded under the Abbott Laboratories 1996 Incentive Stock Program (the &quot;Program&quot;).  They will be paid, on a one-to-one basis, in Abbott  common shares on the earlier of the date on which the director terminates or retires from the Board, dies, or the occurrence of a change in control (as defined in the Program).</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>John A. Berry, Attorney-in-Fact for Roxanne S. Austin</signatureName>
        <signatureDate>2005-04-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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