| Brewery | Location |
|---|---|
| Austin Street | Portland |
| Austin's Homebrew | Madison |
| Australian Brewing Corporation | Little River, Australia |
| Auval | Canada |
| Avery Brewing Company | Boulder, Colorado |
| Avery Brewing/Russian River | |
| Aviator Brewing Company | Fuquay Varina, North Carolina |
| Avondale Brewing | Birmingham, AL |
| Ayinger | |
| Aztec Brewing Company | |
| B. Nektar Meadery | Ferndale, Michigan |
| B.O.B.'s Brewery | |
| B.O.M. Brewery | |
| Back Cabin Brewing Co. | Citrus Heights/Tahoe |
| Back East Brewery | Bloomfield, Connecticut |