| Micro Plastics | Finback Brewery | New England IPA | 8.5% |
| Microbe Rue | Nebraska Brewing Company | Wild Ale | 6.7% |
| MicroCosm I | The Eighth State Brewing Company | American Stout | |
| MicroCosm II | The Eighth State Brewing Company | American Imperial Stout | |
| Microfauna | Sudwerk Brewing | Wild Ale | 6.5% |
| Mid Winter | Solaris Beer & Blending | American Stout | 8.0% |
| Mid-Coast IPA | Boulevard Brewing Company | American IPA | 5.6% |
| Midas Touch | Dogfish Head Craft Brewery | Herb and Spice Beer | 9.0% |
| Midbeam | Supermoon Beer Company | Saison | 5.0% |
| Middle Ages Apricot Ale | Middle Ages Brewing | Fruit and Field Beer | 4.5% |
| Middle Ages Raspberry Ale | Middle Ages Brewing | Fruit and Field Beer | 4.6% |
| Middle of Nowhere | Jackie O's Pub & Brewery | American Imperial Stout | 9.0% |
| Middling Earth | Kings County Brewers Collective (KCBC) | Extra Special / Strong Bitter (ESB) | 4.8% |
| Midgard | Brasserie Vrooden | Sahti | 8.0% |
| Midgårds Øl | Dansk Mjød | | 9.4% |