<SEC-DOCUMENT>0001193125-15-163766-index.html : 20150501
<SEC-HEADER>0001193125-15-163766.hdr.sgml : 20150501
<ACCEPTANCE-DATETIME>20150430215229
ACCESSION NUMBER:		0001193125-15-163766
CONFORMED SUBMISSION TYPE:	NT 20-F
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20141231
FILED AS OF DATE:		20150501
DATE AS OF CHANGE:		20150430
EFFECTIVENESS DATE:		20150501

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TENARIS SA
		CENTRAL INDEX KEY:			0001190723
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		NT 20-F
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31518
		FILM NUMBER:		15821694

	BUSINESS ADDRESS:	
		STREET 1:		29 AVENUE DE LA PORTE-NEUVE
		STREET 2:		3RD FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L 2227
		BUSINESS PHONE:		212-376-6500

	MAIL ADDRESS:	
		STREET 1:		29 AVENUE DE LA PORTE-NEUVE
		STREET 2:		3RD FLOOR
		CITY:			LUXEMBOURG
		STATE:			N4
		ZIP:			L 2227
</SEC-HEADER>
<DOCUMENT>
<TYPE>NT 20-F
<SEQUENCE>1
<FILENAME>d920000dnt20f.htm
<DESCRIPTION>NT 20-F
<TEXT>
Document 1 - file: d920000dnt20f.htm

</DOCUMENT>
</SEC-DOCUMENT>