| Unjunct | Carton | American Stout | 8.5% |
| Unjunct | Carton Brewing Company | American Stout | 8.5% |
| Unkel Brett | Microbrasserie Sutton Brouërie | European Dark Lager | 5.3% |
| Unknown | Shmaltz Brewing Company | | |
| Unknown Beast | DSSOLVR | Schwarzbier | 5.0% |
| Unknown Beginning | Old Thunder Brewing Company | Old Ale | 10.0% |
| Unknown Bottle | Westminster Brewing Company | | |
| Unknown Soldier | The Livery | Wild Ale | |
| Unleash The Yeast: American Ale | BrewDog Ltd | American Pale Ale | 6.3% |
| Unleash The Yeast: Bavarian Weizen | BrewDog Ltd | Hefeweizen | 6.3% |
| Unleash The Yeast: Belgian Trappist | BrewDog Ltd | Belgian Pale Ale | 6.3% |
| Unleash The Yeast: Pilsen Lager | BrewDog Ltd | American Lager | 6.3% |
| Unlocked | Folkingebrew | New England IPA | 9.5% |
| Unloved | The Veil Brewing Company | | 11.0% |
| Unnamed | Forest & Main | | 6.0% |