| Busted Barrel | Red Lodge Ales | American Stout | |
| Buster Nut Brown Ale | Ska Brewing Company | American Brown Ale | 5.3% |
| The Butcher | Societe Brewing Company | American Imperial Stout | 9.8% |
| Butternut Squash Ale | Ratchet Brews | Pumpkin Beer | |
| Butterscotch Toffee Stout | The Hideout Brewing Company | English Stout | 5.6% |
| Butthead Doppelbock | Tommyknocker Brewery and Pub | Doppelbock | 8.2% |
| Butty Bach | Wye Valley Brewery | | 4.5% |
| Buxton / Evil Twin Anglo Mania | Buxton Brewery | English Barleywine | 10.3% |
| Buzz Beer | Mad Crab Restaurant and Brewery | American Pale Ale | |
| Buzzard Bay IPA | Buzzards Bay Brewing Inc. | American IPA | 6.2% |
| Buzzard Breath (discontinued) | Big Rock Brewery | American Pale Ale | 5.0% |
| Buzzerkeley | Calicraft Brewing Co. | | |
| Buzzsaw | Arbor Brewing Company | American IPA | 7.5% |
| Buzzsaw Brown | Deschutes Brewery | American Brown Ale | 4.8% |
| BW + RW Imperial Stout | Boston Beer Works | American Imperial Stout | 9.5% |