    <SEC-DOCUMENT>0001193125-19-201230-index.html : 20190724
    <SEC-HEADER>0001193125-19-201230.hdr.sgml : 20190724
    <ACCEPTANCE-DATETIME>20190724161257
    ACCESSION NUMBER:		0001193125-19-201230
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20190724
    DATE AS OF CHANGE:		20190724
    EFFECTIVENESS DATE:		20190724

    FILER:

    	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

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-26251
    		FILM NUMBER:		19971059

    	BUSINESS ADDRESS:
    		STREET 1:		310 LITTLETON ROAD
    		CITY:			WESTFORD
    		STATE:			MA
    		ZIP:			01886
    		BUSINESS PHONE:		978-614-4000

    	MAIL ADDRESS:
    		STREET 1:		310 LITTLETON ROAD
    		CITY:			WESTFORD
    		STATE:			MA
    		ZIP:			01886
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>d676511ddefa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: d676511ddefa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g676511img01.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g676511img01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g676511img02.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g676511img02.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>