| 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% |
| Imperial Orchard Bu | De Garde Brewing | | |
| Imperial Oyster Stout | Three Boys | | 12.0% |
| Imperial Pajamas Coffee Stout | Begyle Brewing Company | American Imperial Stout | 9.8% |
| Imperial Pale | Engine House #9 | American Pale Ale | |
| Imperial Pale Ale | Route 66 Brewery | American Pale Ale | |
| Imperial Pale Lager | S:t Eriks Bryggeri | | 7.0% |
| Imperial Paradise Now | TrimTab Brewery | Berliner Weisse | 7.5% |