<SEC-DOCUMENT>0001140361-16-066312-index.html : 20160519
<SEC-HEADER>0001140361-16-066312.hdr.sgml : 20160519
<ACCEPTANCE-DATETIME>20160519164053
ACCESSION NUMBER:		0001140361-16-066312
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20150101
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20151231
</ITEM>
</RULE>
FILED AS OF DATE:		20160519
DATE AS OF CHANGE:		20160519

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:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25426
		FILM NUMBER:		161663666

	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>SD
<SEQUENCE>1
<FILENAME>formsd.htm
<DESCRIPTION>NATIONAL INSTRUMENTS CORPORATION SD 12-31-2015
<TEXT>
Document 1 - file: formsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>ex1_01.htm
<DESCRIPTION>EXHIBIT 1.01
<TEXT>
Document 2 - file: ex1_01.htm

</DOCUMENT>
</SEC-DOCUMENT>