| Illegal Leopard | Leprechauno Meadery | | |
| Illegally Hopped IPA | BOOM! Brewing Company | | 9.0% |
| Illerwood | Fonta Flora | Saison | 6.4% |
| Illest Vanillins Pt. II | Jackie O's Pub & Brewery | American Imperial Stout | |
| Illflora | Monkish Brewing Co. | Saison | 4.7% |
| The Illinois | Goose Island Beer Co. | Imperial IPA | 9.0% |
| Illisionist | Little Beast Brewing | American Strong Ale | 12.0% |
| Illtalian Pils | Millpond Brewing & Incubator | German Pilsner | 4.7% |
| Illudium | Straight to Ale Brewing | | 11.5% |
| Illuminati | Crane Brewing | | |
| Illuminati | Leelenau Brewing Company | American Stout | 8.5% |
| Illuminating the Path | Cigar City Brewing | American Strong Ale | 11.0% |
| Illumination | Enlightenment Ales | Belgian IPA | 6.8% |
| Illumination | Otherlands Beer | | 5.8% |
| Illumination Double IPA | Central Waters Brewing Company | Imperial IPA | 9.0% |