San Jose Chamber Orchestra
- Reviews, concert schedule.
- http://www.sjco.org

New Century Chamber Orchestra
- Includes schedule, and ticket information.
- http://www.ncco.org/

The Jeffersonians
- Santa Monica chamber orchestra and comedy group.
- http://www.jeffersonians.com

South Orange County Chamber Orchestra
- pre-professional training orchestra: includes ticket reservations, concert calendar, audition information, and library of audio files.
- http://www.socco.org

South Bay Chamber Music Society of Southern California
- Performs monthly concerts in the LA area. Schedule, history, members.
- http://www.palosverdes.com/sbcms/

San Francisco Chamber Orchestra
- Northern California's oldest professional chamber orchestra. History, personnel, news.
- http://www.sfchamberorchestra.org/

San Diego Chamber Orchestra (SDCO)
- Includes ticket information.
- http://www.sdco.org/

Chamber Orchestra of the South Bay
- Near Los Angeles, CA: includes calendar, reviews, history, subscription information.
- http://www.palosverdes.com/chamberorchestra

Baroque Sinfonia of Sonoma County, California
- A small chamber orchestra of the approximate size and instrumentation of Haydn's day. Background, concert schedule.
- http://www.baroquesinfonia.com