| 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 | |
| Red Branch Brewing Company / Rabbits Foot Meadery | 1246 Birchwood Dr | Sunnyvale | California | 94089-2205 | United States | micro | |
| Red Bus Brewing Company | 802 Reading St Ste A | Folsom | California | 95630-3061 | United States | micro | |
| Red Car Brewery and Restaurant | 1266 Sartori Ave | Torrance | California | 90501-2717 | United States | brewpub | |
| Red Tandem Brewery | 1009 Harbor Blvd | Oxnard | California | 93035-1131 | United States | micro | |
| Redwood Curtain Brewing Co | 550 S G St Ste 6 | Arcata | California | 95521-6683 | United States | micro | |
| Redwood Curtain Brewing Co | 1595 Myrtle Avenue Ste B | Eureka | California | 95501 | United States | micro | |
| Reel Brew Co | 7037 Laurel Canyon Boulevard | Los Angeles | California | 91605 | United States | closed | |
| Refuge Brewery, Inc. | 43040 Rancho Way Ste 200 | Temecula | California | 92590-5400 | United States | micro | |
| Relentless Brewing Co | 42030 Avenida Alvarado Ste F | Temecula | California | 92590-3404 | United States | micro | |
| Rescue Brewing Co | 167 N 2nd Ave | Upland | California | 91786-6019 | United States | micro | |
| Resident Brewing | 411 C St | San Diego | California | 92101-5105 | United States | micro | |
| Right Eye Brewing Co | 301 Spring St | Suisun City | California | 94585 | United States | micro | |
| Riip Beer Company | 17216 Pacific Coast Hwy | Huntington Beach | California | 92649-4116 | United States | micro | |
| Riley's Brew Pub | 2674 Owens Mountain Pkwy Ste 104 | Clovis | California | 93611-9588 | United States | brewpub | |
| Riley's Brewing Co | 28777 Avenue 15 1/2 | Madera | California | 93638-2316 | United States | micro | |
| Rincon Brewery | 5065 Carpinteria Ave | Carpinteria | California | 93013-2046 | United States | brewpub | |
| Rip Current Brewery | 1325 Grand Ave Ste 100 | San Marcos | California | 92078-2451 | United States | micro | |
| Rip Current Brewing North Park | 4101 30th St | San Diego | California | 92104-1905 | United States | brewpub | |
| Ritual Brewing Co | 1315 Research Dr | Redlands | California | 92374-4583 | United States | micro | |
| River City Brewing Co | 6241 Fair Oaks Blvd Ste G | Sacramento | California | 95814-3338 | United States | brewpub | |
| River Rock Brewery | 807 C St | Galt | California | 95632-1706 | United States | micro | |
| Rock Bottom Brewery - La Jolla | 8980 Villa La Jolla Dr | La Jolla | California | 92037-1701 | United States | brewpub | |
| Rock Bottom Brewery - Long Beach | 1 Pine Ave | Long Beach | California | 90802-4759 | United States | brewpub | |
| Rock Bottom Brewery - San Jose | 1875 S Bascom Ave Ste 700 | Campbell | California | 95008-2310 | United States | brewpub | |
| Rocksteady Brewing Co. | 611 Escobar St | Martinez | California | 94553-1111 | United States | brewpub | |
| Rocky Hill Brewing | 20147 Avenue 306 | Exeter | California | 93221-9763 | United States | closed | |
| Rocland Beverage Co | 1601 Airport Rd | Ukiah | California | 95482-6456 | United States | contract | |
| Rok House Brewing Co., LLC | 1939 W 11th St Ste A | Upland | California | 91786-3559 | United States | micro | |
| Roses' Taproom | 4930 Telegraph Ave | Oakland | California | 94609-2012 | United States | micro | |
| Rough Draft Brewing | 8830 Rehco Rd Ste D | San Diego | California | 92121-3263 | United States | micro | |
| Rouleur Brewing Company | 5840 El Camino Real Ste 101 | Carlsbad | California | 92008-8804 | United States | micro | |
| Route 30 Brewing Company | 9860 Indiana Ave Ste 19 | Riverside | California | 92503-5515 | United States | micro | |
| Rowdy's Brewing Company | 10002 6th St Ste A | Rancho Cucamonga | California | 91730-5784 | United States | micro | |
| Rugged Coast Brewing | 817 Piner Ave | Santa Rosa | California | 95403 | United States | closed | |
| Ruhstaller Beer | 800 Business Park Drive, Suite G | Dixon | California | 95620 | United States | micro | |
| Ruhstaller Beer | 726 K St | Sacramento | California | 95814-3403 | United States | micro | |
| Russian River Brewing Co | 725 4th St | Santa Rosa | California | 95404-4407 | United States | regional | |
| Russian River Brewing Co - Production | 1812 Ferdinand Ct | Santa Rosa | California | 95404-5968 | United States | micro | |
| Sackbut Brewing and Barrelwerks | 3153 E Huntington Blvd | Fresno | California | 93702-3215 | United States | micro | |
| Sacrament Brewing | 1616 J st. | Sacramento | California | 95814 | United States | micro | |
| Sacrilege Brewing Project | 730 Main St | Half Moon Bay | California | 94019-1925 | United States | brewpub | |
| Saint Archer Brewing Company | 9550 Distribution Ave | San Diego | California | 92121-2306 | United States | large | |
| San Diego Brewing Co | 10450 Friars Rd Ste L | San Diego | California | 92120-2311 | United States | brewpub | |
| San Fernando Brewing Co. | 425 Park Ave | San Fernando | California | 91340-2525 | United States | micro | |
| San Francisco Brewing Co | 3150 Polk St | San Francisco | California | 94109 | United States | proprietor | |
| San Marcos Brewery and Grill | 1080 W San Marcos Blvd Ste 180 | San Marcos | California | 92078-4099 | United States | closed | |
| San Pedro Brewing Co | 331 W 6th St | San Pedro | California | 90731-3317 | United States | brewpub | |