| Hop Secret Brewing Co | 162 W Pomona Ave | Monrovia | California | 91016-4558 | United States | micro | |
| Hoparazzi Brewing Co | 2910 E La Palma Ave Ste D | Anaheim | California | 92806-2618 | United States | closed | |
| Hoppy Brewing Co | 2425 24th St | Sacramento | California | 95819-4619 | United States | brewpub | |
| HopSaint Brewing Company | 5160 W 190th St | Torrance | California | 90503-1005 | United States | brewpub | |
| Horus Aged Ales | 4040 Calle Platino Ste 120 | Oceanside | California | 92056-5859 | United States | closed | |
| House Beer | 219 Rose Ave | Venice | California | 90291-2567 | United States | proprietor | |
| House Of Pendragon Brewing Co | 1849 Industrial Way Ste 103 | Sanger | California | 93657-8727 | United States | micro | |
| Humble Farmer Brewing Co. | 116 S Imperial Ave Ste C | Imperial | California | 92251-1666 | United States | brewpub | |
| Humble Farmer Brewing Co., Inc. | 438 Walnut Ave | Holtville | California | 92250-1343 | United States | micro | |
| Humble Sea Brewing Co | 820 Swift St | Santa Cruz | California | 95060-5866 | United States | brewpub | |
| Humboldt Regeneration | 2320 Central Ave Ste F | McKinleyville | California | 95519-3682 | United States | micro | |
| Humboldt Springs Brewing Co | | Eureka | California | 95501 | United States | planning | |
| Huntington Beach Beer Co | 201 Main St Ste E | Huntington Beach | California | 92648-8110 | United States | brewpub | |
| HWY 50 Brewery | | Camino | California | 95709 | United States | planning | |
| I & I Brewing | 5135 Edison Ave Ste 1 | Chino | California | 91710-5773 | United States | micro | |
| Idol Beer Works | 100 S Sacramento St | Lodi | California | 95240-3526 | United States | micro | |
| Idyllwild Brewpub | 54423 Village Center Dr | Idyllwild | California | 92549 | United States | brewpub | |
| Inc 82 Brewing | 7370 San Ramon Rd | Dublin | California | 94568-2336 | United States | brewpub | |
| Independent Brewing Co | 444 Harrison St | Oakland | California | 94607-4118 | United States | micro | |
| Indian Joe Brewing | 2123 Industrial Ct | Vista | California | 92081-7900 | United States | micro | |
| Indian Valley Brewing | 14 Commercial Blvd Ste 125 | Novato | California | 94949-6110 | United States | micro | |
| Indian Wells Brewing Co | 2565 State Highway 14 | Inyokern | California | 93527-2700 | United States | micro | |
| Indie Brewing Company | 2350 Sunrise St | Los Angeles | California | 90023-1036 | United States | micro | |
| Inland Empire Brewing Co | 1710 Palmyrita Ave Ste 11 | Riverside | California | 92507-1627 | United States | proprietor | |
| Inland Wharf Brewing Company | 26440 Jefferson Ave Ste A | Murrieta | California | 92562-6951 | United States | micro | |
| Innovation Brew Works | 3650 W Temple Ave Bldg 220A | Pomona | California | 91768-2582 | United States | micro | |
| Institution Ale Company | 3841 Mission Oaks Blvd | Camarillo | California | 93012-5036 | United States | brewpub | |
| Intergalactic Brewing Co | 9715 Carroll Centre Rd #107 | San Diego | California | 92126-6507 | United States | micro | |
| Iron Fist Brewing Co | 1305 Hot Springs Way Ste 101 | Vista | California | 92081-7876 | United States | closed | |
| Iron Springs Pub & Brewery | 765 Center Blvd | Fairfax | California | 94930-1764 | United States | brewpub | |
| Iron Triangle Brewing Company | 1581 Industrial St | Los Angeles | California | 90021-1217 | United States | micro | |
| Ironfire Brewing Company | 42095 Zevo Dr Unit 1 | Temecula | California | 92590-3741 | United States | micro | |
| Island Brewing Co | 5049 6th St | Carpinteria | California | 93013-2001 | United States | micro | |
| Jack Russell Farm Ales | 2380 Larsen Dr | Camino | California | 95709-9749 | United States | brewpub | |
| Jack's Brewing Co | 39176 Argonaut Way | Fremont | California | 94538-1304 | United States | brewpub | |
| Jacked Up Brewery | 800 W Grand Ave Ste B Ste 201 | Escondido | California | 92025-2562 | United States | micro | |
| Jackrabbit Brewing Co | 1323 Terminal St | West Sacramento | California | 95691-3514 | United States | micro | |
| Jamul Brewing Co. - Production Only | 3113 Calle Allejandro | Jamul | California | 91935-3108 | United States | micro | |
| John Scott Brewing Co. | | Trabuco Canyon | California | 92679-5145 | United States | planning | |
| Johnny's Calistoga / Mud City Brews | 1457 Lincoln Ave | Calistoga | California | 94515 | United States | brewpub | |
| JP DasBrew | 44356 S Grimmer Blvd | Fremont | California | 94538-6385 | United States | micro | |
| JT Schmids Restaurant & Brewery | 2610 E Katella Ave | Anaheim | California | 92806-5903 | United States | brewpub | |
| Julian Brewing Co | 2315 Main St | Julian | California | 92065 | United States | micro | |
| Junction Brewery & Grill | 110 W American Canyon Rd | American Canyon | California | 94503-4196 | United States | brewpub | |
| June Lake Brewing | 131 S Crawford Ave | June Lake | California | 93529 | United States | micro | |
| Jupiter | 2181 Shattuck Ave | Berkeley | California | 94704-1308 | United States | brewpub | |
| K-Oz Restaurant Brewery | 121 7th St | San Francisco | California | 94103-2835 | United States | brewpub | |
| Karl Strauss Brewing Co | 5985 Santa Fe St | San Diego | California | 92109-1623 | United States | regional | |
| Karl Strauss Brewing Co | 40868 Winchester Rd | Temecula | California | 92591-5521 | United States | brewpub | |
| Karl Strauss Brewing Co - 4S Ranch | 10448 Reserve Dr | San Diego | California | 92127-3510 | United States | brewpub | |