| Iambic Lambic | Grizzly Peak Brewing | Fruit Lambic | |
| IBA | Lakefront Brewery | | 6.5% |
| Iberian Nightcap | Melovino Craft Meadery | | 13.0% |
| Ibex Series: Barrel Aged Pumpkin Ale | Schlafly | Pumpkin Beer | |
| Ibex Series: Barrel-Aged Imperial Stout | Schlafly | American Imperial Stout | 10.2% |
| Ibex Series: Bourbon Barrel-Aged Barleywine | Schlafly | English Barleywine | |
| Ibex Series: Imperial Coffee Stout | Schlafly | American Imperial Stout | 10.2% |
| Ibex Series: Local Oak | Schlafly | Wild Ale | |
| Ibrik | O'Connor Brewing Company | American Imperial Stout | 7.5% |
| IC Light | Iron City Brewing Co. | Light Lager | 4.2% |
| Icarus | Mortalis | | |
| Ice | Modern Times | Bohemian / Czech Pilsner | 4.8% |
| Ice | Molson Breweries of Canada | American Lager | |
| Ice Bock Doppelbock - Bourbon BA | VandeStreek Bier | Doppelbock | 17.2% |
| Ice Box Gose with Coconut, Vanilla and Lemon | Southern Prohibition Brewery | Gose | 4.5% |