| Brewery | Location |
|---|---|
| Mad Yeast | Belgium |
| MadeWest Brewing Company | Ventura, California |
| Madhouse Brewing Company | |
| Madison River Brewing Company | Belgrade, Montana |
| MadTree | Cincinnati |
| MadX | |
| Maeloc | |
| Magic Hat | South Burlington, Vermont |
| Magic road | Warsaw, Poland |
| Magic Rock | |
| Magnanimous | |
| Magnify Brewing | Fairfield |
| Magnify Brewing / Barreled Souls | |
| Magnolia Pub and Brewery | San Francisco, California |
| Magpie |