-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 SzAWemQRiP3BnfBc8ZW+o/YRbIYasRWLJ0jlnc71+XUuOpSnz8XvWSr/z9J8Zph5
 ZBd1Pxct6WiDxPLeZ3dE0A==

<SEC-DOCUMENT>0001192482-05-000401.txt : 20050824
<SEC-HEADER>0001192482-05-000401.hdr.sgml : 20050824
<ACCEPTANCE-DATETIME>20050824171617
ACCESSION NUMBER:		0001192482-05-000401
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050823
FILED AS OF DATE:		20050824
DATE AS OF CHANGE:		20050824

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ISCO INTERNATIONAL INC
		CENTRAL INDEX KEY:			0000888693
		STANDARD INDUSTRIAL CLASSIFICATION:	INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS [3825]
		IRS NUMBER:				363688459
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		451 KINGSTON CT
		CITY:			MOUNT PROSPECT
		STATE:			IL
		ZIP:			60056
		BUSINESS PHONE:		8473919400

	MAIL ADDRESS:	
		STREET 1:		451 KINGSTON COURT
		CITY:			MT PROSPECT
		STATE:			IL
		ZIP:			60056

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fenger Michael J.
		CENTRAL INDEX KEY:			0001289083

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-22302
		FILM NUMBER:		051046662

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(847)391-9412

	MAIL ADDRESS:	
		STREET 1:		C/O ISCO INTERNATIONAL, INC.
		STREET 2:		451 KINGSTON COURT
		CITY:			MT. PROSPECT
		STATE:			IL
		ZIP:			60056
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-08-23</periodOfReport>

    <issuer>
        <issuerCik>0000888693</issuerCik>
        <issuerName>ISCO INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>ISO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001289083</rptOwnerCik>
            <rptOwnerName>Fenger Michael J.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ISCO INTERNATIONAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1001 CAMBRIDGE DRIVE</rptOwnerStreet2>
            <rptOwnerCity>ELK GROVE VILLAGE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60007</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>2005-08-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>17000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>.28</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Frank Cesario, Attorney-in-Fact for Michael J. Fenger</signatureName>
        <signatureDate>2005-08-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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