<SEC-DOCUMENT>0001654954-17-003503-index.html : 20170731
<SEC-HEADER>0001654954-17-003503.hdr.sgml : 20170731
<ACCEPTANCE-DATETIME>20170420164852
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001654954-17-003503
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20170420

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PTC INC.
		CENTRAL INDEX KEY:			0000857005
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				042866152
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		140 KENDRICK STREET
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494
		BUSINESS PHONE:		7813705000

	MAIL ADDRESS:	
		STREET 1:		140 KENDRICK STREET
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PARAMETRIC TECHNOLOGY CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>
Document 1 - file: filename1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>secondresponsev1000.jpg
<DESCRIPTION>IMAGE
<TEXT>
Document 2 - file: secondresponsev1000.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>secondresponsev1001.jpg
<DESCRIPTION>IMAGE
<TEXT>
Document 3 - file: secondresponsev1001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>secondresponsev1002.jpg
<DESCRIPTION>IMAGE
<TEXT>
Document 4 - file: secondresponsev1002.jpg

</DOCUMENT>
</SEC-DOCUMENT>