| Invisible Art Black IPA | Adroit Theory | Black IPA | 10.1% |
| Invisible Dot | House of Fermentology | Wild Ale | 5.4% |
| Invisible Ink | Magnify Brewing | | |
| Invisible Smile | Superstition Meadery | | 14.0% |
| Invisible Thread | TRVE Brewing Co. | | |
| Invitation to Party | Revision Brewing. Company | Imperial IPA | 8.5% |
| Invocation | Wild Heaven | Belgian Pale Strong Ale | 8.5% |
| Invocation of Chaos | Holy Mountain | American IPA | 7.3% |
| Involuntary Narcissistic Rage | Drekker Brewing Co. | Imperial IPA | 8.5% |
| Ion | River Styx Brewing | American Imperial Stout | 10.0% |
| IOUNNO | Tired Hands | American Imperial Stout | 14.3% |
| Iowa Battleship IPA | San Pedro Brewing | American IPA | 7.1% |
| Iowa Coffee Imperial Stout Aged in Templeton Rye Whiskey Barrels | Upstream Brewing Old Market | American Imperial Stout | 8.0% |
| Iowa Pale Ale | Millstream Brewing | American Pale Ale | 5.7% |
| Iowa Pale Ale | Stone City Brewing | American Pale Ale | 5.0% |