Linux Movies Group
- Focused on Linux motion picture technology such as Maya, SoftImage, Houdini, Shake, Renderman, PovRAY, Blender, and CinePaint. Online discussion list and monthly meetings in the real world.
- http://www.linuxmovies.org/

SGVLUG
- San Gabriel Valley Linux Users Group. The site contains meeting information, a mailing list, some FAQ's and various resources.
- http://www.sgvlug.org/

San Francisco Linux User's Group
- A small group of people in the San Francisco area sharing their enjoyment of Linux.
- http://www.sf-lug.org

Central Valley Linux Enthusiasts (CVALE)
- Stockton and Modesto area Linux user group.
- http://www.cvale.org/about.php

Stanford University Linux User Group
- LUG for Stanford University. A Forum for supporting Linux on campus and talks by various members of the community from the Valley.
- http://sulug.stanford.edu/

East Bay Linux Users Group
- Located in the eastern San Francisco Bay area, this LUG welcomes Linux enthusiasts from all different technical levels and abilities to its monthly meetings.
- http://www.eblug.org/

North Bay Linux Users Group
- Linux Users Group that meets in the Sonoma County area (Sebastopol, Santa Rosa, Rohnert Park) every month. InstallFests quarterly.
- http://nblug.org/

Smaug
- Santa Cruz's *BSD and Linux user group. Meets first Mondays at 8 PM.
- http://www.scruz.org/

SDLUG
- The San Diego Linux Users Group supports professional developers and system administrators in San Diego with national speakers, meetings and the SDLUGFest.
- http://www.sdlug.org/

Bay Area Linux Events
- A calendar of all San Francisco Bay Area Linux user group meetings and related events.
- http://linuxmafia.com/bale/

USCLUG
- University of Southern California Linux Users Group.
- http://sclug.usc.edu/

LULA
- Linux Users of Los Angeles.
- http://www.lula.org/

K-PLUG
- The Kernel-Panic Linux Users Group.
- http://www.kernel-panic.org/

LUGOD
- The Linux User Group Of Davis.
- http://www.lugod.org/

Slug Linux Users' Group (SlugLUG)
- Santa Cruz's Linux Users' Group, hosted by UC Santa Cruz but open to everyone.
- http://sluglug.ucsc.edu/

Simi-Conejo Linux User's Group
- Linux Users Group for the Simi and Conejo Valleys in Southern California.
- http://www.sclug.org/

Silicon Valley Linux User Group
- Meets in North San Jose. SVLUG directly serves Silicon Valley and the surrounding Bay Area. It also helps promote other LUGs anywhere in Northern and Central California.
- http://www.svlug.org/

CLUG
- Cerritos Linux Users Group.
- http://www.cerritoslug.org/

Orange County Linux User Group
- Non-profit, vendor-independent organization in California. Installation help, demonstrations, meetings, news.
- http://www.oclug.org/

Los Angeles Linux User Groups
- Umbrella site for all Los Angeles Linux User groups. Links and information about upcoming events.
- http://www.lalugs.org/

BayLUG- Bay Area Linux Users Group
- Meeting times, general information, and install fests.
- http://www.balug.org/

Consortium of All Bay Area Linux
- There is no CABAL. Long live the CABAL. In the bay area.
- http://www.linuxmafia.com/cabal/