| Bellevue Brewing Spring District Brewpub | 12190 NE District Way | Bellevue | Washington | 98005 | United States | brewpub | |
| Belltown Brewery | 200 Bell St | Seattle | Washington | 98121-1716 | United States | closed | |
| Bellwether Brewing Co | 2019 N Monroe St | Spokane | Washington | 99205-4542 | United States | micro | |
| Bennidito's Brewpub | 1909 E Sprague Ave | Spokane | Washington | 99202-3120 | United States | brewpub | |
| Bent Bine Brew Co. LLC | 23297 WA-3 | Belfair | Washington | 98394 | United States | brewpub | |
| Berchman's Brewing Company | 25 N Front St Ste 2 | Yakima | Washington | 98901-2648 | United States | closed | |
| Best of Hands Barrelhouse | 7500 35th Ave SW | Seattle | Washington | 98126 | United States | closed | |
| Bickerson's Brewhouse | 4710 NE 4th St #C105 | Renton | Washington | 98059 | United States | micro | |
| Big Barn Brewing Co / Bodacious Berries Fruits and Brews | 16004 N Applewood Ln | Mead | Washington | 99021-7818 | United States | micro | |
| Big Block Brewing | 3310 E Lake Sammamish Pkwy SE | Sammamish | Washington | 98075-7497 | United States | micro | |
| Big Block Brewing - Carnation Taproom | 4534 Tolt Ave | Carnation | Washington | 98014-7627 | United States | micro | |
| Big Block Brewing - Redmond Taproom | 14950 NE 95th St | Redmond | Washington | 98052-2500 | United States | micro | |
| Big House Brew Pub | 11 S Palouse St | Walla Walla | Washington | 99362-1925 | United States | brewpub | |
| Big Time Brewery | 4133 University Way NE | Seattle | Washington | 98105-6213 | United States | brewpub | |
| BirdsView Brewing Co | 38302 State Route 20 | Concrete | Washington | 98237-9460 | United States | micro | |
| Bizarre Brewing | 4441 26th Ave SW Ste A | Seattle | Washington | 98199-1218 | United States | micro | |
| BJs Restauraunt & Brewhouse | 4502 S. Steele St. Suite 1500 | Tacoma | Washington | 98409-7277 | United States | brewpub | |
| Black Fleet Brewing | 2302 Fawcett Ave | Tacoma | Washington | 98402-1402 | United States | micro | |
| Black Label Brewing Company | 19 W Main Ave | Spokane | Washington | 99201-5124 | United States | micro | |
| Black Raven Brewing Co | 14679 NE 95th St | Redmond | Washington | 98052-2556 | United States | micro | |
| Black Raven Brewing Co Woodinville | 15902 Woodinville-Redmond Rd NE | Woodinville | Washington | 98072-4572 | United States | micro | |
| Blackbeard's Brewing Company | 700 W Ocean Ave | Westport | Washington | 98595-9603 | United States | brewpub | |
| Blewett Brewing Company | 911 Commercial St | Leavenworth | Washington | 98826-1494 | United States | brewpub | |
| Bluebird Microcreamery and Brewery | 7415 Greenwood Ave N | Seattle | Washington | 98103-5044 | United States | micro | |
| Bombing Range Brewing Company | 2000 Logston Blvd Ste 126 | Richland | Washington | 99354-5330 | United States | brewpub | |
| Bosk Brew Works | 14350 NE 193rd Pl | Woodinville | Washington | 98072-8402 | United States | micro | |
| Bottle Bay Brewing Co | 503 1/2 E 30th Ave | Spokane | Washington | 99203-2557 | United States | micro | |
| Boundary Bay Brewery & Bistro | 1107 Railroad Ave | Bellingham | Washington | 98225-5007 | United States | brewpub | |
| Breaking Waves Brewing | 3388 NW Byron St #100 | Silverdale | Washington | 98383 | United States | closed | |
| BrewBakers Brewery | 11927 84th St NE | Lake Stevens | Washington | 98258-8906 | United States | micro | |
| Brewing Savage Co. | 12815 NE 124th St I | Kirkland | Washington | 98034-8313 | United States | micro | |
| Brewvado Taproom | 135 Lopez Rd B | Lopez Island | Washington | 98261-8290 | United States | micro | |
| Brick West Brewing Co | 1318 W 1st Ave | Spokane | Washington | 99201 | United States | micro | |
| Bron Yr Aur Brewing | 12160 US Highway 12 | Naches | Washington | 98937-9222 | United States | micro | |
| Brother Ass Brewing | 11700 NE 54th Ct | Vancouver | Washington | 98686-4589 | United States | micro | |
| Brothers Cascadia Brewing | 9811 NE 15th Ave | Vancouver | Washington | 98665-9102 | United States | micro | |
| Brouwerij Les Deplorables | 19812 163rd Ave NE | Woodinville | Washington | 98072-7027 | United States | nano | |
| Buckwheat Brewing | 148 E Main St | Dayton | Washington | 99328-1351 | United States | brewpub | |
| Buffalo Brewing Co | 790 Hop Rd | Toppenish | Washington | 98948-9674 | United States | planning | |
| Bugu Brewing Company | 14751 N Kelsey St | Monroe | Washington | 98272-1457 | United States | nano | |
| Burdick Brewery | 8520 14th Ave S | Seattle | Washington | 98108-4803 | United States | closed | |
| Burke-Gilman Brewing | 3626 NE 45th St Ste 102 | Seattle | Washington | 98105-5652 | United States | micro | |
| Burwood Brewing Company | 1120 E St | Walla Walla | Washington | 99362-9505 | United States | micro | |
| Cairn Brewing | 7204 NE 175th St | Kenmore | Washington | 98028-3561 | United States | micro | |
| Camp Colvos Brewing | 17636 Vashon Hwy SW | Vashon | Washington | 98070-6052 | United States | micro | |
| Cardinal Craft Brewing Academy/ Skagit Valley College | 15579 Peterson Rd | Burlington | Washington | 98233-3625 | United States | micro | |
| Cascadia Brewing Co. | 211 4th Ave E | Olympia | Washington | 98501-1104 | United States | closed | |
| Cash Brewing Company | 3388 NW Byron St Ste 100 | Silverdale | Washington | 98383-8548 | United States | closed | |
| Chainline Brewing Company | 503 6th St S | Kirkland | Washington | 98033-6717 | United States | closed | |
| Chainline Brewing Company - Chainline Station | 604 5th Pl S | Kirkland | Washington | 98033-6673 | United States | taproom | |