| Magnify Brewing | Fairfield |
| Magnify Brewing / Barreled Souls | |
| Magnolia Pub and Brewery | San Francisco, California |
| Magpie | |
| Mahmood Saeed Beverage Industry | |
| Mahou S.A. | Madrid, Spain |
| Main & Mill Brewing Co. | Festus, Missouri |
| Main Street Alehouse | Gresham, Oregon |
| Main Street Beer Company #1 | Richmond, Virginia |
| Main Street Brewery | Corona, California |
| Main Street Brewing | Dallas, Texas |
| Main Street Brewing Co. 4204 | Belleville, Illinois |
| Main Street Station Casino, Brewery and Hotel | Las Vegas, Nevada |
| Maine Beer Company | Portland |
| Maisel Bru | Bamberg, Germany |