| Marin Brewing | Larkspur Landing, California |
| Marine Pub & Brewhouse | Burnaby, Canada |
| Maritime Pacific Brewing | Seattle, Washington |
| Mark Twain | Hannibal, MO |
| Market Garden Brewery | Cleveland, Ohio |
| Market Street Brewing Co. and Restaurant | Corning, New York |
| Marks and Spencer | |
| Marlowe Artisinal Ales | |
| Marquette Harbor Brewery and Restaurant | Marquette, Michigan |
| Marshall Brewing Company | Tulsa, Oklahoma |
| Marshall Wharf Brewing Company | Belfast, Maine |
| Marston's | United Kingdom |
| Martin City Brewing Company | Kansas City, Missouri |
| Martin House Brewing Company | Fort Worth, Texas |
| Martin's | Belgium |