<SEC-DOCUMENT>0001193125-19-064652-index.html : 20190306
<SEC-HEADER>0001193125-19-064652.hdr.sgml : 20190306
<ACCEPTANCE-DATETIME>20190306071242
ACCESSION NUMBER:		0001193125-19-064652
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20190306
FILED AS OF DATE:		20190306
DATE AS OF CHANGE:		20190306

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			21Vianet Group, Inc.
		CENTRAL INDEX KEY:			0001508475
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
		IRS NUMBER:				000000000

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35126
		FILM NUMBER:		19661220

	BUSINESS ADDRESS:	
		STREET 1:		M5, 1JIUXIANQIAO EAST ROAD
		STREET 2:		Chaoyang District
		CITY:			Beijing
		STATE:			F4
		ZIP:			100016
		BUSINESS PHONE:		(86 10) 8456-2121

	MAIL ADDRESS:	
		STREET 1:		M5, 1JIUXIANQIAO EAST ROAD
		STREET 2:		Chaoyang District
		CITY:			Beijing
		STATE:			F4
		ZIP:			100016

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	21 Vianet Group, Inc.
		DATE OF NAME CHANGE:	20101221
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>d720834d6k.htm
<DESCRIPTION>FORM 6-K
<TEXT>
Document 1 - file: d720834d6k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d720834dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: d720834dex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g720834image1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g720834image1.jpg

</DOCUMENT>
</SEC-DOCUMENT>