San Diego Parrot Head Club
- Club for people interested in the lifestyle and music of Jimmy Buffett. Photo album and membership information.
- http://sdphc.blogspot.com

National Association of Investors Corporation (NAIC) San Diego
- Local chapter of non-profit organization that sponsors programs and provides information for the education and use of individual investors and investment club members. Information about activities and membership.
- http://www.betterinvesting.org/chapter/sandiego/

San Diego Chapter of the IPC Designers Council
- A professional organization by and for printed circuit designers. Mission statement, events calendar, sponsors, resources, and minutes of meetings.
- http://dcchapters.ipc.org/SanDiego/

San Diego County Amateur Radio Council
- SANDARC serves the ham radio community, and is made up of member clubs dedicated to the advancement of amateur radio. Includes information about activities and member clubs.
- http://www.qsl.net/n6oph/

Society of Illustrators San Diego
- Activities, resources, membership information, and samples of members' work
- http://www.societyofillustratorssandiego.org/

San Diego Hysterical Society
- Humorous accounts of fictional people and bogus events.
- http://gothere.com/SanDiegoHystericalSociety/

San Diego Peace Corps Association
- Organization of returned Peace Corps volunteers and other interested parties dedicated to continuing the Peace Corps experience. Programs, events, newsletter, and membership information.
- http://edweb.sdsu.edu/sdpca/

San Diego Creative Weavers' Guild
- Educates the general public in the art of weaving. Meetings, workshops, classes, barter center, gallery, and membership information.
- http://www.sdcwg.org/

San Diego Astronomy Association
- Events, newsletters, skywatching information, resources, science news, and membership information.
- http://www.sdaa.org/

San Diego Mountain Biking Association
- Not-for-profit, volunteer organization representing the interests of off-road cyclists and other non-motorized trail users in the San Diego area.
- http://www.sdmba.com/