| Brewery | Location |
|---|---|
| Martini-Brauerei | Kassel, Germany |
| Maryensztadt | |
| Marz Community Brewing | Chicago |
| Marzoni's Brick Oven & Brewing Co | Duncansville, Pennsylvania |
| Mash House Restaurant and Brewery | Fayetteville, North Carolina |
| MashCraft Brewing | Greenwood, Indiana |
| Maskeron | Zagreb, Croatia |
| Mason Ale Works | |
| Mass. Bay Brewing Company | Boston, Mass |
| Massengill's Brew Pub | San Pedro, California |
| Mast Landing Brewing Company | Westbrook , ME |
| Master Gao Brewing Company | Nanjing, China |
| Masthead Brewing Company | |
| Mastri Birrai Umbri | |
| Matchless | Olympia, WA |