| The Unknown Brewing Co. | |
| Unruly Brewing Co. | Muskegon, MI |
| Unseen Creatures Brewing and Blending | Miami, Florida |
| Unsung Brewing Company | Tustin, California |
| Untitled Art | Waunakee |
| Untitled Art / Bottle Logic | Waunakee |
| Untitled Art / Cerebral Brewing | |
| Untitled Art / Listermann Brewing Company | |
| Untitled Art / Mikerphone Brewing | Waunakee |
| Upland Brewing | Bloomington, Indiana |
| Upland Brewing Company / Jolly Pumpkin Artisan Ales | |
| Upper Hand Brewery | Escanaba |
| Upper Mississippi Brewing | Clinton, Iowa |
| Upper Pass Beer Company | Tunbridge, Vermont |
| Uppsala Brygghus | Uppsala, Sweden |