| Blue Spruce Brewing | 4151 E County Line Rd Unit G | Centennial | Colorado | 80122-8113 | United States | brewpub | |
| Blue Spruce Brewing Littleton | 10577 W Centennial Rd | Littleton | Colorado | 80127-4233 | United States | brewpub | |
| Boggy Draw Brewery | 3535 S Platte River Dr Ste L | Sheridan | Colorado | 80110-3307 | United States | micro | |
| Bonfire Brewing | 127 W 2nd St | Eagle | Colorado | 81631 | United States | micro | |
| Bonfire Brewing Production | 936 Chambers Ct. B-4 | Eagle | Colorado | 81631-5276 | United States | micro | |
| Bootstrap Brewing | 142 Pratt St | Longmont | Colorado | 80501 | United States | micro | |
| Bootstrap Brewing Co | 6778 N 79th St | Niwot | Colorado | 80503-7118 | United States | micro | |
| Bottom Shelf Brewery | 118 E Mill St | Bayfield | Colorado | 81122 | United States | brewpub | |
| Boulder Beer Co | 2880 Wilderness Pl | Boulder | Colorado | 80301-5401 | United States | regional | |
| Boulder Beer On Walnut | 1123 Walnut St | Boulder | Colorado | 80302-5116 | United States | brewpub | |
| Brass Brewing Company | 318 E Colorado Ave | Colorado Springs | Colorado | 80903-1949 | United States | micro | |
| Breckenridge Brewery | 2920 Brewery Ln | Littleton | Colorado | 80120-2850 | United States | large | |
| Breckenridge Brewery & Pub | 600 S Main St | Breckenridge | Colorado | 80424-0075 | United States | large | |
| Breckenridge Brewery Ale & Game House | 200 Inverness Drive W Suite 100 | Englewood | Colorado | 80112 | United States | brewpub | |
| Brew Pub and Kitchen | 117 W College Dr | Durango | Colorado | 81301-5407 | United States | brewpub | |
| Brewability Lab | 12445 E 39th Ave Unit 314 | Denver | Colorado | 80239-3456 | United States | micro | |
| Brewery Rickoli | 4335 Wadsworth Blvd | Wheat Ridge | Colorado | 80033-4621 | United States | micro | |
| Brewmented | 900 S Hover St Ste C | Longmont | Colorado | 80501-7941 | United States | micro | |
| Briar Common Brewery | 2298 N Clay St | Denver | Colorado | 80211-5122 | United States | brewpub | |
| Bristol Brewing Co | 1604 S Cascade Ave | Colorado Springs | Colorado | 80905-2237 | United States | micro | |
| Broken Compass Brewing | 68 Continental Ct Unit B-12 | Breckenridge | Colorado | 80424-8515 | United States | micro | |
| Broken Plow Brewery | 4731 W 10th St Unit G | Greeley | Colorado | 80634-2046 | United States | micro | |
| BRU Handbuilt Ales and Eats | 5290 Arapahoe Ave | Boulder | Colorado | 80303-1269 | United States | brewpub | |
| Brues Alehouse Brewing Company | 120 Riverwalk Place | Pueblo | Colorado | 81003 | United States | brewpub | |
| Bruz Beers | 1675 W 67th Ave Ste 100 | Denver | Colorado | 80221-2595 | United States | micro | |
| Buckhorn Brewers LLC | 4229 W Eisenhower Blvd | Loveland | Colorado | 80537-9202 | United States | micro | |
| Bull & Bush Brewery | 4700 E Cherry Creek South Dr | Denver | Colorado | 80246-1819 | United States | brewpub | |
| Burgundian Brewing Co. | 4725 Lipan St | Denver | Colorado | 80211-2334 | United States | micro | |
| Burly Brewing Company, LLC | 680 Atchison Way Ste 700-800 | Castle Rock | Colorado | 80109-3106 | United States | closed | |
| Burns Family Artisan Ales | | Denver | Colorado | 80219-1655 | United States | planning | |
| Butcherknife Brewing Company | 2875 Elk River Rd | Steamboat Springs | Colorado | 80487-5076 | United States | micro | |
| C.B. and Potts/Big Horn Brewery - Englewood | 6575 Greenwood Plaza Blvd | Englewood | Colorado | 80111-4933 | United States | closed | |
| C.B. and Potts/Big Horn Brewery - Highlands Ranch | 43 W Centennial Blvd | Highlands Ranch | Colorado | 80129-2323 | United States | closed | |
| C.B. and Potts/Big Horn Brewery - Westminster | 1257 W 120th Ave | Westminster | Colorado | 80234-2725 | United States | closed | |
| Call To Arms Brewing Company | 4526 Tennyson St | Denver | Colorado | 80212-2527 | United States | micro | |
| Cannonball Creek Brewing Co | 393 Washington Ave Unit A | Golden | Colorado | 80403-1889 | United States | micro | |
| Capitol Creek Brewery | 371 Market St | Basalt | Colorado | 81621-7409 | United States | brewpub | |
| Carbondale Beer Works | 647 Main St | Carbondale | Colorado | 81623-1934 | United States | brewpub | |
| Carver Brewing Co | 1022 Main Ave | Durango | Colorado | 81301-5124 | United States | brewpub | |
| Casey Brewing and Blending | 3421 Grand Ave Ste 4D | Glenwood Springs | Colorado | 81601-4493 | United States | micro | |
| Castle Rock Beer Company | 514 Perry St Ste C106 | Castle Rock | Colorado | 80104-1711 | United States | closed | |
| Cellar West Artisan Ales | 1001 Lee Hill Dr Ste 10 | Boulder | Colorado | 80302-9471 | United States | micro | |
| Cerberus Brewing Company | 702 W Colorado Ave | Colorado Springs | Colorado | 80905-1539 | United States | brewpub | |
| Cerebral Brewing | 1477 Monroe St | Denver | Colorado | 80206-2708 | United States | micro | |
| Chain Reaction Brewing Company | 902 S Lipan St | Denver | Colorado | 80223-2717 | United States | micro | |
| Cheluna Brewing Company | 2501 Dallas St Unit 148 | Aurora | Colorado | 80010-1045 | United States | micro | |
| ChopHouse and Brewery - Denver | 1735 19th St Ste 100 | Denver | Colorado | 80202-6002 | United States | brewpub | |
| City Star Brewing | 321 Mountain Avenue | Berthoud | Colorado | 80513- | United States | micro | |
| CO-Brew | 1133 N Broadway | Denver | Colorado | 80203-2106 | United States | micro | |
| Coal Mine Ave Brewing Company | 9719 W Coal Mine Ave Unit A | Littleton | Colorado | 80123-8000 | United States | micro | |