| Mayflower Brewing Company | Plymouth |
| Mazama Brewing | |
| Mazurskie Miody | Tomaszkowo, Poland |
| McCashin's Brewery & Malthouse | Nelson, New Zealand |
| McCoy's Public House and Brewkitchen | Kansas City, Missouri |
| McEwan's | |
| McGuire's Irish Pub and Brewery - Pensacola | Pensacola, Florida |
| McKenzie Brew House | Glen Mills, Pennsylvania |
| McLaren Vale Brewing Company | Australia |
| McMenamins Edgefield Brewery | Troutdale |
| McMenamins Mill Creek | Mill Creek, Washington |
| McMullen & Sons | Hertford, United Kingdom |
| McNeill's Brewery | Brattleboro, Vermont |
| Mea Culpa | Brussels, Belgium |
| Meadowlark Brewing | |