| Atlantis Gose | Stillwater Artisanal Ales | Gose | 4.5% |
| Atlas Amber Ale | Big Time Brewing | American Amber / Red Ale | |
| Atlas IPA | Marshall Brewing Company | American IPA | |
| Atlas Lager | Cervecera Nacional | American Lager | 3.8% |
| Atomic Kangarue | The Bruery | Wild Ale | 9.5% |
| Atomic Raygun Imperial Red | Spring House Brewing Company | American Amber / Red Ale | 8.3% |
| Atomic Whale | 18th Street Brewery | | |
| Atramentous | Three Brothers Brewing | | |
| Atrial Rubicite | Jester King Craft Brewery | Wild Ale | 5.8% |
| Atta Boy IPA | Pleasanton Main Street Brewery | American IPA | 7.3% |
| Attack Frequency | Modern Times | Saison | 6.0% |
| Attack of the Devil's Lettuce | Pipeworks Brewing Company | Imperial IPA | 9.0% |
| Attempted Redrum | New England Brewing Co. | | 13.0% |
| Attic & Eaves | Slumbrew | American Brown Ale | 7.5% |
| Au Ra | Intangible Ales | Saison | 4.5% |