| Other organizations in California |
| Id | Name | Address | State | Established | Total Income |
| 1 | Oak Knoll Neighborhood Association | 1296 S Oak Knoll Ave, Pasadena, CA 91106 | CA | 2014-06 | $0 |
| 2 | Okhoa | 25023 1/2 Everett Drive, Newhall, CA 91321 | CA | 2014-08 | $0 |
| 3 | Okpanam Association Usa | 41037 Sunsprite Street, Lake Elsinore, CA 92532 | CA | | $0 |
| 4 | Olivas Weekend Womens Golf Club | 2321 Pebble Beach Trail, Oxnard, CA 93036-7753 | CA | | $0 |
| 5 | Omega Psi Phi Fraternity | Po Box 5723, Oxnard, CA 93031 | CA | 1953-01 | $0 |
| 6 | One Foot Forward Foundation Inc | 320 N Halstead Street, Pasadena, CA 91107 | CA | | $0 |
| 7 | One Vision For America | 455 Capitol Mall Ste 600, Sacramento, CA 95814 | CA | 2014-06 | $0 |
| 8 | One World Agenda | 1902 Mclaren Drive, Roseville, CA 95661 | CA | | $0 |
| 9 | Ontario Airport Alliance Inc | 9421 Haven Avenue, Rancho Cucamonga, CA 91730 | CA | 2013-11 | $0 |
| 10 | Operation Glove Inc | 12189 7th Street Suite 141, Yucaipa, CA 92399 | CA | | $0 |
| 11 | Optimist Club Of Sacramento Inc | 400 Capitol Mall, Sacramento, CA 95814 | CA | | $0 |
| 12 | Optimist International | 4311 Center Street, Piru, CA 93040 | CA | 1958-07 | $0 |
| 13 | Optimist International, The Optimist Club Of Simi Valley Moorpark | 7271 Darnoch Way, West Hills, CA 91307 | CA | 1958-07 | $0 |
| 14 | Orange Charter Chapter Of The American Business Womens Associati | 754 S Ruby Lane, Anaheim, CA 92807 | CA | 2014-09 | $0 |
| 15 | Orange County Conservation Corps Charter School | 1548 E Walnut Ave, Fullerton, CA 92831-4719 | CA | 2014-08 | $0 |
| 16 | Orange County Geranium Society | 1431 Ponderosa Ave, Fullerton, CA 92835 | CA | | $0 |
| 17 | Order Of Golden Slipper, Lavon Chapter Order Of Golden Slipper | 35645 Mountain View Lane, Yucaipa, CA 92399 | CA | | $0 |
| 18 | Organic Fresh Org, Organic Fresh Org Inc Organic Fresh Org Inc | Po Box 22161, San Francisco, CA 94122 | CA | | $0 |
| 19 | Our Lady Of Guadalupe Society | 4848 Pearl Avenue, San Jose, CA 95136 | CA | | $0 |
| 20 | Outpost Research Group | 1440 N Harbor Blvd Ste 100, Fullerton, CA 92835 | CA | | $0 |
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