<SEC-DOCUMENT>0001140361-20-006619-index.html : 20200324
<SEC-HEADER>0001140361-20-006619.hdr.sgml : 20200324
<ACCEPTANCE-DATETIME>20200324060502
ACCESSION NUMBER:		0001140361-20-006619
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20200324
DATE AS OF CHANGE:		20200324
EFFECTIVENESS DATE:		20200324

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL INSTRUMENTS CORP
		CENTRAL INDEX KEY:			0000935494
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				741871327
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25426
		FILM NUMBER:		20736499

	BUSINESS ADDRESS:	
		STREET 1:		11500 NORTH MOPAC EXPRESSWAY
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78759
		BUSINESS PHONE:		5123389119

	MAIL ADDRESS:	
		STREET 1:		11500 NORTH MOPAC EXPRESSWAY
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78759

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATIONAL INSTRUMENTS CORP /DE/
		DATE OF NAME CHANGE:	19950113
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>nc10009371x2_defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: nc10009371x2_defa14a.htm

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<SEQUENCE>2
<FILENAME>nc10009371x2_na01.jpg
<TEXT>
Document 2 - file: nc10009371x2_na01.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>nc10009371x2_na02.jpg
<TEXT>
Document 3 - file: nc10009371x2_na02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>nc10009371x2_na03.jpg
<TEXT>
Document 4 - file: nc10009371x2_na03.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>nc10009371x2_na04.jpg
<TEXT>
Document 5 - file: nc10009371x2_na04.jpg

</DOCUMENT>
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