| Illuminating the Path | Cigar City Brewing | American Strong Ale | 11.0% |
| Illumination | Enlightenment Ales | Belgian IPA | 6.8% |
| Illumination Double IPA | Central Waters Brewing Company | Imperial IPA | 9.0% |
| Illuminator Doppelbock | Half Moon Bay Brewing | Bock | 6.8% |
| Illuminatos | Lickinghole Creek Craft Brewery | American Imperial Stout | 11.3% |
| Illustration Ale | East End Brewing Company | Belgian Dark Strong Ale | 9.4% |
| Im Paled Ale | Middle Ages Brewing | American IPA | 6.5% |
| Imagination | Cascade Brewing | | |
| Imagination Atrophy | Adroit Theory | | |
| Imagine | Block 15 Brewery & Restaurant | Russian Imperial Stout | 15.0% |
| Immelmann (Barrel Roll No. 01) | Hangar 24 Craft Brewery | American Porter | 11.4% |
| Immitis | Avery Brewing Company | Wild Ale | 9.5% |
| Immixence | Jackie O's Pub & Brewery | Saison | 7.7% |
| Immoralité | Brasserie Dieu du Ciel | Imperial IPA | 9.2% |
| Immort Ale | Dogfish Head Craft Brewery | | 11.0% |