Please Note, this list is not a complete one. If you know of any schools that are missing, or have any website addresses that I have missed, please let me know so that I can update the list. Thank you.
California
Chushinkan Dojo
7212 Orangethorpe Ave #8
Buena Park, CA 90621
(714) 523-2255
Aikido of Diablo Valley
1674 Challenge Drive
Concord, CA 94520
(925) 676-6763
Shuyokan Martial Arts Center
1360 Logan Suite #108
Costa Mesa, CA 92626
(714) 557-6372
Aikido Doshinokai
10816 Washington Blvd
Culver City, CA 90232
(310) 765-4769
Aikido of Alamo
321 Hartz Avenue
Danville, CA 94526
(925) 837-7251
East Bay Aikido
1446 Leimert Blvd.
Oakland, CA 94602
(510) 531-0303
Shuto Dojo
1556 Corte Capriana
Escondido, CA 92026
(760) 735-8291
Tri City Aikido
4673 Thornton Ave. Suite 6
Fremont, CA 94536
(510) 742-8321
Aiki Budo Kan
37111 Post St. Suite E
Fremont, CA
(510) 742-8321
Yoshinkan Kenshu – Huntington Beach Shindokan Aikido Dojo
17661 Beach Blvd
Huntington Beach, CA 92647
(949) 495-9216
Yoshinkan Aikido Irvine Kenshu Center
15315 Culver Drive Suite #150
Irvine, CA 92604
(949) 495-9216
Ikazuchi Dojo
4213 Campus Drive
Irvine, CA
(949) 509-0001
American Institute of Martial Arts
119 N. Livermore Ave.
Livermore, CA 94550
(925) 371-6062
Aikido of Beverly Hills
8182 Sunset Blvd. #201
Los Angeles, CA
(323) 654-8882
City Aikido and Swordsmanship of Los Angeles
621 South Avenue 21
Los Angeles, CA 90031
(323) 225-8129
Newport Beach Aikikai
4533 MacArthur Blvd
Newport Beach, CA 92660
(949) 553-0160
Los Angeles Aikikai
8929 Ellis Avenue
Los Angeles, CA 90034
(310) 838-7557
Redlands Aikikai
721 S. Nevada Street, Suite 305
Redlands, CA 92373
(909) 335-5411
Victory Dojo
18411 Victory Blvd.
Reseda, CA
(818) 772-4311
Seikeikan Dojo Aikido Yoshinkan Sacramento (IYAF)
6745 Hazel Ave
Orangevale, CA 95662
(916) 989-6023
Aikido of Mission Valley
4562 Alvarado Canyon Rd, Suite O
San Diego, CA 92120
(619) 993-2454
Suginami Aikikai
141 11th Street
San Francisco, CA 94103
(415) 777-2833
Bay Marin Aikido
1345 Via Sessi
San Rafael, CA 94901
(415) 455-0971
Blue Sky Aiki Dojo
26516 Golden Valley Rd, Suite 302
Santa Clarita, CA 91350
(661) 250-9147
Aikido of Silicon Valley
Duane Avenue
Sunnyvale, CA
(408) 506-7846
Aikido Academy of San Gabriel Japanese Community
5019 N. Encinatas
Temple City, CA 91780
(818) 286-9850
Shotakekan Aikido Dojo
11554 Santa Monica Blvd.
W. Los Angeles, CA 90025
(310) 445-0080
Westlake Village Aikido
30845 Thousand Oaks Blvd.
Westlake Village, CA 91361
(805) 405-6555
Makoto Dojo
3026 Telegraph Rd.
Ventura, CA 93003
(805) 641-0447