| Mathias Dahlgren - Oktoberfest | S:t Eriks Bryggeri | European Pale Lager | 5.3% |
| Mathlete | Rhinegeist Brewery | | 4.0% |
| Matilda | Goose Island Beer Co. | Belgian Pale Strong Ale | 7.0% |
| Matilda | Goose Island Beer Company - Fulton Street | | 7.0% |
| Matinee | 2 Crows Brewing Co. | New England IPA | 3.1% |
| Matinee | Dois Corvos | American IPA | |
| Matisse | Night Shift Brewing | Saison | 6.8% |
| Matölen | Evil twin / Mathias Dahlgren | American Porter | 6.5% |
| Matrices | Sante Adairius Rustic Ales | Saison | |
| Matricide | Nightmare Brewing Company | American Imperial Stout | 15.1% |
| Matrimonium | Monkish Brewing Co. | | 11.1% |
| Matryoshka | Fort George Brewery | Russian Imperial Stout | 12.0% |
| Matryoshka Barrel Select Edition (2024) | Fort George Brewery | | 13.5% |
| Matryoshka Vanilla | Fort George Brewery | American Imperial Stout | 12.8% |
| Matryoshka Vanilla & Cocoa Nibs | Fort George Brewery | American Imperial Stout | 12.8% |