<SEC-DOCUMENT>0000895419-13-000020.txt : 20130423
<SEC-HEADER>0000895419-13-000020.hdr.sgml : 20130423
<ACCEPTANCE-DATETIME>20130423164140
ACCESSION NUMBER:		0000895419-13-000020
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20121128
FILED AS OF DATE:		20130423
DATE AS OF CHANGE:		20130423

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			RUUD ALAN J
		CENTRAL INDEX KEY:			0001052774

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21154
		FILM NUMBER:		13776921

	MAIL ADDRESS:	
		STREET 1:		9201 WASHINGTON AVE
		CITY:			RACINE
		STATE:			WI
		ZIP:			54406

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CREE INC
		CENTRAL INDEX KEY:			0000895419
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				561572719
		STATE OF INCORPORATION:			NC
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		4600 SILICON DR
		CITY:			DURHAM
		STATE:			NC
		ZIP:			27703
		BUSINESS PHONE:		9194075300

	MAIL ADDRESS:	
		STREET 1:		4600 SILICON DR
		CITY:			DURHAM
		STATE:			NC
		ZIP:			27703-8475

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CREE RESEARCH INC /NC/
		DATE OF NAME CHANGE:	19940224
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-11-28</periodOfReport>

    <issuer>
        <issuerCik>0000895419</issuerCik>
        <issuerName>CREE INC</issuerName>
        <issuerTradingSymbol>CREE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001052774</rptOwnerCik>
            <rptOwnerName>RUUD ALAN J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CREE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>4600 SILICON DRIVE</rptOwnerStreet2>
            <rptOwnerCity>DURHAM</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>27703</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-04-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4157</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>40.85</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1208850</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>967</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Return of escrowed shares to the issuer pursuant to a Stock Purchase Agreement and an Escrow Agreement entered into on August 17, 2011 in connection with the acquisition by Cree, Inc. of all the outstanding capital stock of Ruud Lighting, Inc. The shares were returned pursuant to an indemnity claim under the terms of the Stock Purchase Agreement.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Tamara Cappelson, as agent for Alan J. Ruud</signatureName>
        <signatureDate>2013-04-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
