| Imperial Mokah Blended Stout | Southern Tier Brewing Co | | 11.0% |
| Imperial Moon Butter | Angry Chair Brewing | | 10.0% |
| Imperial Moountie | Bolero Snort | | |
| Imperial Mutt Brown Ale | Stone Brewing | American Brown Ale | 9.0% |
| Imperial Nectarine Bu | De Garde Brewing | Berliner Weisse | |
| Imperial New England IPA | Greater Good Imperial Brewing Company | Imperial IPA | 12.0% |
| Imperial Nitro Stout | Äppelbo Bryggeri | American Imperial Stout | 9.5% |
| Imperial Niu | Phase Three Brewing Company | Imperial Porter | 12.0% |
| Imperial Nut Brown | Tommyknocker Brewery and Pub | American Brown Ale | 9.8% |
| Imperial Nutcase with Coffee | Listermann Brewing Company | Imperial Porter | 11.2% |
| Imperial Oatmeal Stout | Oproer Brouwerij | Oatmeal Stout | 9.5% |
| Imperial Oatmeal Stout | Reuben's Brews | American Imperial Stout | 8.4% |
| Imperial Oatmeal Stout | Thornbridge | American Imperial Stout | 11.0% |
| Imperial Olde Brune | Kuhnhenn Brewing | Flanders Oud Bruin | 10.5% |
| Imperial Or Xata | The Bruery | American Blonde Ale | 11.2% |