| Brewery | Location |
|---|---|
| Ass Kisser Ales | San Jose, California |
| Athenian Brewery | Athens, Greece |
| Atlanta Brewing Company | Atlanta, Georgia |
| Atlantic Brewing Company | Bar Harbor, Maine |
| Atlas Brewing | |
| Atom Brewing | Erie, Colorado |
| Atwater Block Brewing | Detroit, Michigan |
| Atwater Brewery | Detroit, Michigan |
| Auburn Alehouse | Auburn |
| AuerBräu AG | Rosenheim |
| Augenbrauerei Biel | Biel-Bienne, Switzerland |
| August Schell Brewing | New Ulm, Minnesota |
| Augusta Brewing | Augusta, Missouri |
| Augustiner-Bräu München | München, Germany |
| Austin Beerworks | Austin, Texas |