| Adventure Brewing Company | Fredericksburg |
| Adventurous Brewing | Bettendorf, Iowa |
| Aeronaut Brewing Company | Somerville, Massachusetts |
| AF Brew | Saint Petersburg, Russian Federation |
| Affligem Brouwerij | Opwijk, Belgium |
| Afterthought Brewing Company | Lombard, Illinois |
| Against the Grain | Louisville, Kentucky |
| Against the Grain & Brouwerij de Molen | Louisville, Kentucky |
| Against The Grain Brewery & Smokehouse | |
| Agassiz Brewing | Winnipeg, Canada |
| Agner & Wolf Brewery Corp. | Nashua, NH |
| Agrarian Hop Farm Ales | Springfield, Oregon |
| Agua Mala Cerveceria | Mexico |
| Ahlafors Bryggerier | Alafors, Sweden |
| Ahnapee Brewing | Algoma, WI |