| Ise Kadoya Stout | Nikenjayamochi Kadoya Honten Co. | American Stout | 5.0% |
| Ish | Oxbow Brewing Company | | |
| Ishmael | Rising Tide | American Brown Ale | |
| Isi dor | Bierbrouwerij De Koningshoeven | | |
| Isis | Sonoma Springs Brewery | Wild Ale | 5.6% |
| Isla | The Good Beer Company | Wild Ale | 4.8% |
| Isla de la Playa | Heavy Reel Brewing Company | American Lager | 5.0% |
| Island Beach Lager | Heavy Reel Brewing Company | American Lager | 5.0% |
| Island Booty | Tyranena Brewing | | |
| Island Chomper | Short's Brewing Company | Imperial IPA | 9.8% |
| Island Daydream | The Rare Barrel | Wild Ale | 6.3% |
| Island Diaries | Drake's Brewing Co. | Quadrupel (Quad) | 13.4% |
| Island Drift | Bereta Brewing Co. | New England IPA | 8.5% |
| Island King | Tree House Brewing Company | Imperial IPA | 8.4% |
| Island Lager | Granville Island Brewing Company | American Lager | 5.0% |