| Mills Brewing | |
| Millstream Brewing | Amana, Iowa |
| Milly's Tavern | Manchester, New Hampshire |
| Milwaukee Ale House | Milwaukee, Wisconsin |
| Milwaukee Brewing Company | |
| Minhas Craft Brewery | Monroe, Wisconsin |
| Minipivovar Matuška Broumy (Matuska) | Czech Republic |
| Minneapolis Town Hall Brewery | Minneapolis, Minnesota |
| Minnesota Brewing | Saint Paul, Minnesota |
| Minocqua Brewing Company | Minocqua, Wisconsin |
| Minorit | Zagreb, Croatia |
| Mirage Beer Company | Seattle, Washington |
| Mirror Twin Brewing | Lexington |
| Misbeehavin' Meads | Valparaiso |
| Misery Beer Co. | Harzé, Belgium |