<SEC-DOCUMENT>0001193125-16-659678-index.html : 20160826
<SEC-HEADER>0001193125-16-659678.hdr.sgml : 20160826
<ACCEPTANCE-DATETIME>20160727141202
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001193125-16-659678
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20160727

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COGNEX CORP
		CENTRAL INDEX KEY:			0000851205
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				042713778
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		ONE VISION DR
		CITY:			NATICK
		STATE:			MA
		ZIP:			01760
		BUSINESS PHONE:		5086503000

	MAIL ADDRESS:	
		STREET 1:		ONE VISION DRIVE
		CITY:			NATICK
		STATE:			MA
		ZIP:			01760
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>
Document 1 - file: filename1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g411117g08z53.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g411117g08z53.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g411117image002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g411117image002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g411117image003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g411117image003.jpg

</DOCUMENT>
</SEC-DOCUMENT>