| Mercury Brewing Company | Ipswich, Massachusetts |
| Měšťanský pivovar Havlíčkův Brod a.s. | Havlickuv Brod, Czech Republic |
| Metropolitan Brewing | Chicago, Illinois |
| Mia and Pia's Pizzeria and Brewhouse | Klamath Falls, Oregon |
| Miami Brewing Company | |
| Michelob | |
| Michigan Brewing | Webberville, Michigan |
| Mickey Finn's Brewery | Libertyville, Illinois |
| Mickey's Brewing Co. | Milwaukee, Wisconsin |
| Microbrasserie aux fous brassant | Rivière-du-Loup |
| Microbrasserie Charlevoix | Canada |
| Microbrasserie Coaticook | Coaticook |
| Microbrasserie de l'île d'Orléans | Sainte-Famille, Île d'Orléans |
| Microbrasserie des Beaux Prés | Sainte-Anne-de-Beaupré |
| Microbrasserie Du Lac-Saint-Jean | Saint-Gédéon, Canada |