| Igor's Dream | Two Roads Brewing Co. | Russian Imperial Stout | 10.9% |
| III (Three) | OEC Brewing (Ordinem Ecentrici Coctores) | Wild Ale | 9.0% |
| III Dolia | Avery Brewing Company | Wild Ale | 7.1% |
| III Dry Hopped Centennial | OEC Brewing (Ordinem Ecentrici Coctores) | | 9.0% |
| IIPA | Frampton Brasse | Imperial IPA | 8.2% |
| IIPA de la sorcière Version 2 | Microbrasserie Pit Caribou | Imperial IPA | 8.0% |
| IIPA de la sorcière Version 3 | Microbrasserie Pit Caribou | Imperial IPA | 9.5% |
| Iisalmi Pale Ale | Olvi | | 4.7% |
| IJndejaars | Brouwerij 't IJ | Belgian Dark Strong Ale | 9.0% |
| Ijwit | Brouwerij 't IJ | Witbier | 6.5% |
| Ill Tempered Gnome | Oakshire Brewing | Winter Warmer | 6.8% |
| Illegally Hopped IPA | BOOM! Brewing Company | | 9.0% |
| The Illinois | Goose Island Beer Co. | Imperial IPA | 9.0% |
| Illudium | Straight to Ale Brewing | | 11.5% |
| Illuminati | Leelenau Brewing Company | American Stout | 8.5% |