<SEC-DOCUMENT>0000935494-18-000010-index.html : 20180430
<SEC-HEADER>0000935494-18-000010.hdr.sgml : 20180430
<ACCEPTANCE-DATETIME>20180427185150
ACCESSION NUMBER:		0000935494-18-000010
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20180430
DATE AS OF CHANGE:		20180427
EFFECTIVENESS DATE:		20180430

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:		18786104

	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>presentation_materials.htm
<DESCRIPTION>NATIONAL INSTRUMENTS CORPORATION - PRESENTATION MATERIALS
<TEXT>
Document 1 - file: presentation_materials.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>presentation_materiaslide1.jpg
<TEXT>
Document 2 - file: presentation_materiaslide1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>presentation_materiaslide2.jpg
<TEXT>
Document 3 - file: presentation_materiaslide2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>presentation_materiaslide4.jpg
<TEXT>
Document 4 - file: presentation_materiaslide4.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>presentation_materiaslide5.jpg
<TEXT>
Document 5 - file: presentation_materiaslide5.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>presentation_materiaslide6.jpg
<TEXT>
Document 6 - file: presentation_materiaslide6.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>presentation_materiaslide9.jpg
<TEXT>
Document 7 - file: presentation_materiaslide9.jpg

</DOCUMENT>
</SEC-DOCUMENT>