| Brewery | Location |
|---|---|
| Matchless | Olympia, WA |
| Matera Brasseurs Tonneliers | |
| Matilda Bay Brewing | North Fremantle, Australia |
| Matt's Home Brew | Cincinnati |
| Matten | Matzenheim, France |
| Maui Brewing Co. | Lahaina, Maui, Hawaii |
| Maumee Bay Brewing | Toledo, Ohio |
| Maximus Brouwerij | Belgium |
| Maybee Brewing Company | Fredericton |
| Mayflower Brewing Company | Plymouth |
| Mazama Brewing | |
| Mazurskie Miody | Tomaszkowo, Poland |
| McCashin's Brewery & Malthouse | Nelson, New Zealand |
| McCoy's Public House and Brewkitchen | Kansas City, Missouri |
| McEwan's |