| M2 | Abnormal Beer Co. | Oatmeal Stout | 9.0% |
| Ma | Tree House Brewing Company | American Amber / Red Ale | 7.3% |
| Macadamia Nut Brown Ale | Ali`i Brewing | | |
| Macchiato Espresso Milk Stout | Abita Brewing Company | Sweet / Milk Stout | 6.0% |
| Maceo | Green Man Brewery | | 8.6% |
| MacFannybaw | Against The Grain Brewery & Smokehouse | Rauchbier | 8.5% |
| Mach 10 | Bear Republic Brewery | Imperial IPA | 9.2% |
| Mach-Limit | Black Project Spontaneous & Wild Ales | | |
| MacHayden's Wee Heavy | Blue Mountain Brewery | | |
| Mackeson XXX Stout | Whitbread Beer Company | Sweet / Milk Stout | 4.9% |
| Mackinaw | Toolbox Brewing Co. | Wild Ale | 6.0% |
| Mackinaw Fudge Donkey Stout | Founders Brewing | American Stout | 7.0% |
| Mackinaw Island Fudge Stout | Arbor Brewing Company | American Stout | 5.0% |
| Mackroken Flower | Le Bilboquet, Brasseur Artisan | Scotch Ale / Wee Heavy | 10.8% |
| MacKroken Flower | Microbrasserie Loup Rouge | Scotch Ale / Wee Heavy | 10.0% |