| Irish Walker | Olde Hickory Brewery | English Bitter | 10.1% |
| Irish Whiskey Cask | Innis & Gunn | English Stout | 7.4% |
| Irish Winter | 3 Sons Brewing Co | American Imperial Stout | 10.0% |
| Irish-ish Coffee Stout | Evil Twin | American Imperial Stout | 10.3% |
| Irish-Style Extra Stout | Schlafly | Foreign / Export Stout | 8.0% |
| Irma Extra | McKenzie Brew House | Wild Ale | 7.5% |
| Iron & Barleywine | Funky Buddha Lounge and Brewery | English Barleywine | 10.5% |
| Iron Arm Belgian Style Wheat | Barley Creek Brewing | Witbier | |
| Iron Bridge Wenlock Stout - Bourbon Barrel Aged | Freewheel Brewing Co. | | 5.2% |
| Iron City | Iron City Brewing Co. | American Lager | 4.5% |
| Iron City Amber Classic Lager | Pittsburg Brewing Co. | American Amber / Red Lager | |
| Iron City Beer | Pittsburg Brewing Co. | American Lager | 4.5% |
| Iron City Light Mango | Pittsburg Brewing Co. | Fruit and Field Beer | 3.8% |
| Iron Fist Pale Ale | Revolution Brewing LLC | American Pale Ale | |
| Iron Forge IPA | Iron Forge Brewing | | |