Linux Users' Groups Webring  
   Webring containing listings of many Linux Users Groups throughout the world.
   http://nlug.org/webring/

Linuxgrrls  
   Linux community site for Grrls.
   http://www.linuxgrrls.org/

LinuxChix (tm)  
   LUG for women.
   http://www.linuxchix.org/

Linux Forensics  
   User group dedicated to using linux to forensically examine computers. Open to all, topics be related to forensics and log exams.
   http://groups.yahoo.com/group/linux_forensics/

Linux Orbit LUG Support Program  
   Help, free web space, and email accounts to help you start and run your own LUG.
   http://www.linuxorbit.com/modules.php?op=modload&name=LUGs&file=index

Linux Users Groups WorldWide  
   The LUGWW project is part of the Linux Counter, and lists over 500 groups.
   http://lugww.counter.li.org/

BLT GNU/Linux Users' Group  
   Global 'virtual' LUG. Has a mailing list and IRC sessions for members all around the world, and holds activities this way.
   http://lug.basiclinux.net/index.html