| McEwan's Scotch Ale | Caledonian Brewing | Scotch Ale / Wee Heavy | 8.0% |
| McEwan's Scotch Ale | Charles Wells Ltd. | Scotch Ale / Wee Heavy | 8.0% |
| McEwan's Scotch Ale | Wells and (&) Youngs Brewing Company Ltd. | Scotch Ale / Wee Heavy | 8.0% |
| McEwans Scotch Ale | Marston's | Scottish Ale | 8.0% |
| McGilligans IPA | The Livery | American IPA | 6.3% |
| McGovern's Oatmeal Stout | Belfast Bay Brewing Company | Oatmeal Stout | |
| McIlhenney's Irish Red | Alpine Beer Company | Irish Red Ale | 6.0% |
| McIntosh & Maple | Champlain Orchards Cidery | | 6.0% |
| McLaughlin’s Folly | Barrage Brewing Company | Oatmeal Stout | 5.7% |
| McLennium | BT McClintic Beer Company | | |
| McMinnville Harvest Lager | Heater Allen Brewing | German Pilsner | 5.0% |
| McNellie's Pub Ale | Marshall Brewing Company | Extra Special / Strong Bitter (ESB) | |
| McRogue | Rogue Ales | Scotch Ale / Wee Heavy | 7.0% |
| McSorley's Irish Black Lager | Pabst Brewing Company | | |
| MC^Ghost | Parish Brewing | Imperial IPA | 8.5% |