Linux India - A nationwide umbrella group of linux enthusiasts from India and abroad who likes to foster the growth of Linux in India. - http://linux-india.org/
GNU Linux Group of Madurai - Conducts annual Free Software Festival and also has regular meetings and events. Site has a mailing list for the users. - http://glug-madurai.org/
The GNU Linux User Group of Howrah - Organizing free seminars and workshops from time to time, and also have localized version of Linux for download. Site contains online forum, information and links. - http://www.glug-howrah.org/
GNU/Linux User Group of Trichy - LUG of the city Trichy in the Tamil Nadu state of India. Site contains meeting information, a mailing list and downloads. - http://glugt.org/
Glugot - GNU/Linux Usergroup of TCE - GNU/Linux usergroup of the Thiagarajar College of Engineering. Site contains meetings information, a mailing list, and a wiki. - http://glugot.tce.edu/
Free Software User Group - Bangalore - A group of Linux and free software enthusiasts in Bangalore. Sites contains a mailing list, information about meetings, a wiki and some news. - http://bangalore.gnu.org.in/
Indian Linux Users Group - Cochin / Kochi Chapter - Chapter of the Indian Linux User Group for the Cochin / Kochi area. The site contains a mailing list, meetings information, and articles. - http://www.ilug-cochin.org
Linux Experts Group - An Indian Group for Linux fans. Share your knowledge and experience. - http://groups.google.co.in/group/linuxexperts/about
LINUXjunkies Foundation - LINUXjunkies Foundation , an NPO whose mission is to not only promote GNU/Linux but also to preserve, protect and promote the freedom to make use of computer software, and to defend the rights of free software users in West Bengal and India. - http://www.linuxjunkies.org/
India Linux User Group - Mangalore - LUG for Mangalore. Site contains meeting information, a mailing list, a gallery, and links. - http://www.linux-mangalore.org
Trivandrum GNU/Linux Users Group - A user group located in the South Indian city of Trivandrum. Site contains meeting information, a mailing list, jobs information, and a photo gallery. - http://triglug.sarovar.org/
Bangalore Linux User Group - An active LUG in the IT capital of India. Site contains meetings and events, mailing lists information and some information resources. - http://linux-bangalore.org/
PLUG - Pune Linux User Group - PUNE GNU/Linux User Group. Site contains mailing list information and links. - http://www.plug.org.in
Northern India Linux - Message boards, chats and information for advocacy of Linux at all levels of computing. - http://groups.yahoo.com/group/lug-northindia/
Indian Linux Users Group - Chennai / Madras - For people interested in the Linux operating system and its derivative distros. Expert talks at every meet on various topics of interest to the FSF / Open Source community. Meet every other Saturday. - http://www.chennailug.org/