| Mountain Man: Imperial Dark Rye ale aged in bourbon barrels | Verboten Brewing | | |
| Mountain Meadow | Bootlegger's Brewery | | |
| Mountain Meditation #48 | Guggman Haus | New England IPA | 6.8% |
| Mountain Mirror | Outer Range Brewing Co. | American IPA | 6.7% |
| Mountain Standard | Odell Brewing | American IPA | 6.5% |
| Mountain Standard Double Black IPA | Odell Brewing | Black IPA | 9.5% |
| Mountain Time | New Belgium Brewing | | |
| Mountain Wheat | Breckenridge BBQ of Omaha | American Lager | |
| Mountain Wheat | Breckenridge Brewery | American Lager | |
| Mountaineer Maibock | Barley Creek Brewing | Maibock | |
| The Mountie | Sawdust City Brewing Company | Bière de Garde | 8.0% |
| Mourning of Adonis | Superstition Meadery | | 13.0% |
| Mousetrap Rye Pale Ale | Parsons | | 6.0% |
| Mousse | Magnify Brewing | | |
| Mousse Knuckle | Bonsai Brewing Project | Oatmeal Stout | 6.5% |