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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 TtGrTNaHFPrJOfnaY9qSVOdHPdFNwnbYgbpChpYHGsgXnsuwRxL1ijtF9imfWEjv
 vwr3YPbACh70ACCbAvd8Yg==

<SEC-DOCUMENT>0001209191-03-025808.txt : 20031016
<SEC-HEADER>0001209191-03-025808.hdr.sgml : 20031016
<ACCEPTANCE-DATETIME>20031016145332
ACCESSION NUMBER:		0001209191-03-025808
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031014
FILED AS OF DATE:		20031016

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NETSCOUT SYSTEMS INC
		CENTRAL INDEX KEY:			0001078075
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				042837575
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		4 TECHNOLOGY PARK DR
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886
		BUSINESS PHONE:		9786144000

	MAIL ADDRESS:	
		STREET 1:		4 TECHNOLOGY PARK DRIVE
		CITY:			WESTFORD
		STATE:			MA
		ZIP:			01886

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCHICIANO KENNETH T
		CENTRAL INDEX KEY:			0001267209

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26251
		FILM NUMBER:		03943697

	BUSINESS ADDRESS:	
		STREET 1:		125 HIGH ST STE 2500
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		6175746781

	MAIL ADDRESS:	
		STREET 1:		125 HIGH ST STE 2500
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>b48171ks.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-10-14</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0001078075</issuerCik><issuerName>NETSCOUT SYSTEMS INC</issuerName>        <issuerTradingSymbol>NTCT</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001267209</rptOwnerCik><rptOwnerName>SCHICIANO KENNETH T</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>125 HIGH STREET</rptOwnerStreet1><rptOwnerStreet2>SUITE 2500</rptOwnerStreet2><rptOwnerCity>BOSTON</rptOwnerCity><rptOwnerState>MA</rptOwnerState><rptOwnerZipCode>02110</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securi
tyTitle><value>Director's Option</value></securityTitle><conversionOrExercisePrice><value>5.41</value></conversionOrExercisePrice><transactionDate><value>2003-10-14</value></transactionDate><deemedExecutionDate><value>2003-10-14</value></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>10000</value></transactionShares><transactionPricePerShare><value>5.41</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-10-14</value><footnoteId id="F1" /></exerciseDate><expirationDate><value>2013-10-14</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>10000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts
><sharesOwnedFollowingTransaction><value>40000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">10,000 stock options are exercisable on 10/14/04, provided that during such year, the reporting person attends at least 75% of the meetings of the Board and at least 75% of the meetings of any committee of the Board of which the reporting person is a member. In the event the attendance requirements are not met, the options will not become exercisable until 10/14/06.</footnote></footnotes><ownerSignature><signatureName>/s/ Thomas P. Alber, Attorney-in-Fact for Kenneth T. Schiciano</signatureName><signatureDate>2003-10-16</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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