Fremont Youth Symphony
- Provides audition details, calendar, members, and contact details.
- http://www.fremontyouthsymphony.org/

Purple Silk Music Foundation
- Nonprofit organization supporting ongoing Chinese music programs in Oakland.
- http://www.purplesilk.org/

Verdugo Young Musicians' Association
- String orchestra for children ages 7-17 in the Glendale, Pasadena area.
- http://vyma.org

San Diego Young Artists Symphony
- Information about the orchestra and performance dates.
- http://www.sdyaso.org/

San Francisco Symphony Youth Orchestra
- View calendar, get audition information, or contact the orchestra.
- http://www.sfsymphony.org/templates/youth.asp?nodeid=82

Peninsula Youth Orchestra
- Includes educational programs, calendar, membership information, and contact details.
- http://www.peninsulayouthorchestra.org

Youth Orchestra of Southern Alameda County (YOSAC)
- Provides membership information, calendar, and contact details.
- http://www.yosac.org/

Civic Youth Orchestra
- Located in San Diego. Provides educational programs, audition information, concerts and events schedules, and contact details.
- http://www.sandiegocyo.org/

San Jose Youth Symphony
- Presents educational programs, concerts, musicians and information on how to audition.
- http://sjys.org/

Pacific Symphony Youth Orchestra
- Features concerts, director biography, musicians, membership information, alumni information, forum, and contact details.
- http://www.psyo.org

Oakland Youth Orchestra
- Information about concerts, tours and events.
- http://www.oyo.org/

South Bay Youth Orchestra
- [Saratoga] Non-profit organization and also the resident youth orchestra of West Valley College. Includes general information, application form, schedule and contact form.
- http://www.sbyo.com/

Peter Meremblum Youth Orchestras
- Musicians aged 8-18 from throughout Los Angeles County meet saturdays in West Hollywood for orchestra, chamber music and theory. Founded in 1936, they are sponsored by the California Junior Symphony Association.
- http://www.meremblum.org/

Pasadena Young Musicians Orchestra
- Includes concert and audition information, members list and conductor profile.
- http://www.pymo.org/

Golden Gate Philharmonic
- [San Francisco] It is a youth orchestra for young people K-12.
- http://www.ggph.org/

El Camino Youth Symphony.
- [Palo Alto] Open to school aged musicians.
- http://www.ecys.org/

California Youth Symphony
- California's first independent youth orchestra, founded in 1952.
- http://cys.org/

American Youth Symphony
- [Los Angelos] Provides training and opportunities for instrumentalists between the ages of 18 and 25.
- http://www.aysymphony.org/