| Mach 10 | Bear Republic Brewery | Imperial IPA | 9.2% |
| Mach Limit: Cab Sauv | Black Project Spontaneous & Wild Ales | Wild Ale | |
| Mach Limit: Tempranillo | Black Project Spontaneous & Wild Ales | Wild Ale | |
| Mach-Limit | Black Project Spontaneous & Wild Ales | | |
| Mach-Limit Bourbon BA | Black Project Spontaneous & Wild Ales | Wild Ale | 11.0% |
| Macha | Brasserie Philippe | Belgian Pale Ale | 6.0% |
| MacHayden's Wee Heavy | Blue Mountain Brewery | | |
| Machine | Bunker Brewing | Bohemian / Czech Pilsner | 5.2% |
| Machine Convene | Cellarmaker Brewing Co. | English Barleywine | 14.1% |
| Mack Opus | Round Corner Brewing | American Brown Ale | 4.5% |
| Mackaper | Omnipollo | American Pale Ale | 6.0% |
| Mackeson Triple Stout | Florida Beer Company | Sweet / Milk Stout | 4.9% |
| 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% |