| Brewery | Location |
|---|---|
| Austri | Egilstađir , Iceland |
| Auval | Canada |
| Avant-Garde Artisans Brasseurs | Montreal |
| Avery Brewing Company | Boulder, Colorado |
| Avery Brewing/Russian River | |
| Aviator Ales, Inc | |
| Aviator Brewing Company | Fuquay Varina, North Carolina |
| Avondale Brewing | Birmingham, AL |
| Axes Castellum | |
| Ayinger Privatbrauerei | Aying, Germany |
| Aztec Brewing Company | |
| Azvex Brewing Company | Liverpool , United Kingdom |
| B BOP FERMENTORY | Biatorbágy, Hungary |
| B. Nektar Meadery | Ferndale, Michigan |
| B.O.B.'s Brewery |