-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 FErtO+xlgUQCfMFd2du0hITDH5HQ7Snk+l5kwrwMDNxOHR3EC8X3gesmC0JzEhpe
 S4kBJuE5YCYYfZoyPFsnEA==

<SEC-DOCUMENT>0001381078-09-000004.txt : 20091022
<SEC-HEADER>0001381078-09-000004.hdr.sgml : 20091022
<ACCEPTANCE-DATETIME>20091022165003
ACCESSION NUMBER:		0001381078-09-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091020
FILED AS OF DATE:		20091022
DATE AS OF CHANGE:		20091022

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KNOLL INC
		CENTRAL INDEX KEY:			0001011570
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS FURNITURE & FIXTURES [2590]
		IRS NUMBER:				133873847
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1235 WATER ST
		CITY:			EAST GREENVILLE
		STATE:			PA
		ZIP:			18041
		BUSINESS PHONE:		2156797991

	MAIL ADDRESS:	
		STREET 1:		1235 WATER STREET
		CITY:			EAST GREENVILLE
		STATE:			PA
		ZIP:			18041

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Schutte David L
		CENTRAL INDEX KEY:			0001381078

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12907
		FILM NUMBER:		091132901

	MAIL ADDRESS:	
		STREET 1:		C/O KNOLL, INC.
		STREET 2:		1235 WATER STREET
		CITY:			EAST GREENVILLE
		STATE:			PA
		ZIP:			18041
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-10-20</periodOfReport>

    <issuer>
        <issuerCik>0001011570</issuerCik>
        <issuerName>KNOLL INC</issuerName>
        <issuerTradingSymbol>KNL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001381078</rptOwnerCik>
            <rptOwnerName>Schutte David L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O KNOLL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1235 WATER STREET</rptOwnerStreet2>
            <rptOwnerCity>EAST GREENVILLE</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>18041</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr.V.P.Chief Marketing Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>10.24</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-10-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2016-10-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>79072</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These stock options vest in four equal installments on the first, second, third, and fourth anniversary of October 20, 2009.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Michael A. Pollner, Attorney-in-Fact</signatureName>
        <signatureDate>2009-10-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----