| Aspall Cider | Stowmarket, United Kingdom |
| Aspen Brewing Company | Aspen, Colorado |
| Aspen Brewing Company / Casey Brewing And Blending | |
| Aspen Brewing Company/Great Divide Brewing Company | |
| Ass Clown | Cornelius |
| Ass Kisser Ales | San Jose, California |
| Atelier Vrai | Heidelbach, Germany |
| Athenian Brewery | Athens, Greece |
| Athletic Brewing Co. | Stratford, Connecticut |
| Atlanta Brewing Company | Atlanta, Georgia |
| Atlantic Brewing Company | Bar Harbor, Maine |
| Atlas Brew Works | Washington D.C. |
| Atom Brewing | Erie, Colorado |
| Atrium | Belgium |
| Atwater Block Brewing | Detroit, Michigan |