| Isolation - Mosaic | Roses by the Stairs Brewing Company | American IPA | 6.5% |
| Isolation Ale | Odell Brewing | Winter Warmer | 6.0% |
| Isostatic Rebound | Elder Pine Brewing & Blending | German Pilsner | 5.4% |
| Issaquah Bullfrog Ale | Rogue Ales | American Pale Wheat Beer | |
| Isseki Nicho | Brasserie Dieu du Ciel | Saison | 9.5% |
| Isseki Nicho (fut de pinot noir) | Brasserie Dieu du Ciel | | |
| Istället För... | Emmaboda Bryggeri | Belgian Dark Strong Ale | 9.0% |
| iStout | 8 Wired Brewing Co. | Russian Imperial Stout | 10.0% |
| istout 11th Anniversary Edition | 8 Wired Brewing Co. | | |
| iStout Affogato | 8 Wired Brewing Co. | American Imperial Stout | 10.0% |
| It Ain't Much But It’s Honest Work | Triptych Brewing | Imperial IPA | 8.2% |
| It Aint Heavy | Bassoonbrew | Scotch Ale / Wee Heavy | 7.7% |
| It Came From Seneca Lake | War Horse | Imperial IPA | 10.4% |
| It Came Upon a Midnight Meme | Triptych Brewing | Black IPA | 8.0% |
| It Comes In Waves | The Eighth State Brewing Company | American Imperial Stout | |