| Brewery | Location |
|---|---|
| Multi-Brasses | Tingwick |
| Mumford Brewing | Los Angeles, California |
| Munich Brew Mafia | Munich, Germany |
| Munkebo Mikrobryg | |
| Munkle Brewing | |
| Murphy's Brewery Ireland Limited | Cork |
| Murphy's Wagon Wheel | Hastings, Nebraska |
| Museum Brewing Company | Burton-upon-Trent, United Kingdom |
| Muskoka Brewery | Bracebridge, Ontario |
| Mussel Inn | Takaka, New Zealand |
| Mustang Brewing Co. | Oklahoma City, Oklahoma |
| Muxa Brewing Company | Mexicali |
| My Home Brew | Cincinnati |
| Myanmar Brewery and Distillery | Yangon, Myanmar |
| Mystery Brewing Company |