| New English Brewing Co Inc | 11545 Sorrento Valley Rd Ste 305 | San Diego | California | 92121-1322 | United States | micro | |
| New Glory Craft Brewery | 8251 Alpine Ave | Sacramento | California | 95826-4708 | United States | micro | |
| New Helvetia Brewing Company | 1730 Broadway | Sacramento | California | 95818-2320 | United States | micro | |
| Nickel Beer Co | 1485 Hollow Glen Rd | Julian | California | 92036 | United States | micro | |
| No Clue Craft Brewery | 9037 Arrow Rte Ste 170 | Rancho Cucamonga | California | 91730-4433 | United States | micro | |
| Noble Ale Works | 1621 S Sinclair St Ste B | Anaheim | California | 92806-5947 | United States | micro | |
| North Park Beer Co. | 3038 University Ave | San Diego | California | 92104-3002 | United States | micro | |
| Northern Pine Brewing | 326 N Horne St | Oceanside | California | 92054-2810 | United States | micro | |
| Nova Brewing Co | 1580 W San Bernardino Rd Ste H | Covina | California | 91722-3457 | United States | micro | |
| Novel Brewing Company | 6510 San Pablo Ave | Oakland | California | 94608-1236 | United States | micro | |
| Novo Brazil Brewing Company | 901 Lane Ave # 100 | Chula Vista | California | 91914-3501 | United States | micro | |
| Oak Hills Brewing | 12221 Poplar St Ste 3 | Hesperia | California | 92344-9287 | United States | micro | |
| Oakland United Beerworks | 3775 Alameda Ave Ste G | Oakland | California | 94601-3920 | United States | micro | |
| Oceanside Ale Works | 1800 Ord Way | Oceanside | California | 92056-1502 | United States | micro | |
| Oceanside Brewing Company | 312 Via Del Norte | Oceanside | California | 92058-1232 | United States | micro | |
| Off the Grid Brewing Co | 13615 John Glenn Rd Ste A | Apple Valley | California | 92308-5730 | United States | micro | |
| Offshoot Beer Co. | 737 Dunn Way | Placentia | California | 92870 | United States | micro | |
| Ogopogo Brewing | 864 Commercial Ave | San Gabriel | California | 91776 | United States | micro | |
| Ohana Brewing Co | 1756 E 23rd St | Los Angeles | California | 90058-1012 | United States | micro | |
| OK3 Brewing Company | 12913 17th Ave | Lemoore | California | 93245-9485 | United States | micro | |
| Ol' Republic Brewery | 124 Argall Way | Nevada City | California | 95959-3002 | United States | micro | |
| Ol' Republic Brewery Rancho Cordova | 11151 Trade Center Dr Ste 104 | Rancho Cordova | California | 95670 | United States | micro | |
| Old Hangtown Beer Works | | Placerville | California | 95667 | United States | micro | |
| Old Hangtown Beer Works | 11327 Trade Center Dr Ste 350 | Rancho Cordova | California | 95742-6285 | United States | micro | |
| Old Stump Brewery | 2896 Metropolitan Pl | Pomona | California | 91767-1854 | United States | micro | |
| Origin Brewer | | Richmond | California | 94805-2121 | United States | micro | |
| Original Pattern Brewing Company | 292 4th St | Oakland | California | 94607-4332 | United States | micro | |
| Out of Bounds Brewing Company | 4480 Yankee Hill Rd Ste 100 | Rocklin | California | 95677-1633 | United States | micro | |
| Outbreak Brewing Co. | 640 Main St | Placerville | California | 95667-5704 | United States | micro | |
| Outpost Brewing Co | 932 Stateline Ave | South Lake Tahoe | California | 96150-6913 | United States | micro | |
| Pacific Islander Beer Company | 8665 Argent St ste b | Santee | California | 92071-4180 | United States | micro | |
| Pacific Plate Brewing Co | 1999 S Myrtle Ave | Monrovia | California | 91016-4854 | United States | micro | |
| Packinghouse Brewing Co, The | 6421 Central Ave Ste 101 | Riverside | California | 92504-1450 | United States | micro | |
| Paraiso Brewery | 80 W G St | Los Banos | California | 93635-3659 | United States | micro | |
| Pariah Brewing Company | 3052 El Cajon Blvd Ste B | San Diego | California | 92104-1618 | United States | micro | |
| Pedro Point Brewing | 55A Bill Drake Way | Pacifica | California | 94044 | United States | micro | |
| Pine and Palm Brewing | 352 W Bedford Ave Ste 102 | Fresno | California | 93711-6079 | United States | micro | |
| Pine Street Brewery | | San Francisco | California | 94109-4929 | United States | micro | |
| Pismo Brewing Co | 500 Cypress St | Pismo Beach | California | 93449-2624 | United States | micro | |
| Plow Brewing Company | 3334 Industrial Dr | Santa Rosa | California | 95403-2011 | United States | micro | |
| Pocock Brewing Company | 24907 Avenue Tibbitts Ste B | Santa Clarita | California | 91355-3487 | United States | micro | |
| Poor House Brewing | 4494 30th St | San Diego | California | 92116-4287 | United States | micro | |
| Porchlight Brewing Company | 866 57th St | Sacramento | California | 95819-3327 | United States | micro | |
| Port Brewing Co / The Lost Abbey | 155 Mata Way Ste 104 | San Marcos | California | 92069-2983 | United States | micro | |
| Poseidon Brewing Company | 5777 Olivas Park Dr Unit Q | Ventura | California | 93003-7928 | United States | micro | |
| Progress Brewing | 1822 Chico Ave | South El Monte | California | 91733-2944 | United States | micro | |
| Protector Brewery | 8680 Miralani Dr Ste 128 | San Diego | California | 92126-6392 | United States | micro | |
| Pure Order Brewing Co | 410 N Quarantina St | Santa Barbara | California | 93103-3119 | United States | micro | |
| Pure Project | 9030 Kenamar Dr Ste 308 | San Diego | California | 92121-2432 | United States | micro | |
| Quantum Brewing Co | 5375 Kearny Villa Rd Ste 116 | San Diego | California | 92123-1422 | United States | micro | |