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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 HaF7cv05FcTxpMomO25gg+XZEaApcesYzb3zY9VGDkJZIuWVNTR2W0OwqZ1yoPvQ
 Egy8UkRnhEhMpgUUnaKwrw==

<SEC-DOCUMENT>0001127602-10-030264.txt : 20101210
<SEC-HEADER>0001127602-10-030264.hdr.sgml : 20101210
<ACCEPTANCE-DATETIME>20101210170315
ACCESSION NUMBER:		0001127602-10-030264
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101210
FILED AS OF DATE:		20101210
DATE AS OF CHANGE:		20101210

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARRAY BIOPHARMA INC
		CENTRAL INDEX KEY:			0001100412
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				841460811
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		3200 WALNUT STREET
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301
		BUSINESS PHONE:		3033816600

	MAIL ADDRESS:	
		STREET 1:		3200 WALNUT STREET
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CARRUTHERS MICHAEL
		CENTRAL INDEX KEY:			0001184335

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16633
		FILM NUMBER:		101245672

	MAIL ADDRESS:	
		STREET 1:		3200 WALNUT ST
		CITY:			BOULDER
		STATE:			CO
		ZIP:			80301
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-12-10</periodOfReport>

    <issuer>
        <issuerCik>0001100412</issuerCik>
        <issuerName>ARRAY BIOPHARMA INC</issuerName>
        <issuerTradingSymbol>ARRY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001184335</rptOwnerCik>
            <rptOwnerName>CARRUTHERS MICHAEL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3200 WALNUT STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOULDER</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80301</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1256</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.24</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>89650</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 30, 2010.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>R. Michael Carruthers</signatureName>
        <signatureDate>2010-12-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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