| Imperial German Cinnacake | Angry Chair Brewing | American Imperial Stout | |
| Imperial Gilded Lady | Birmingham District Brewing Company | Dubbel | 11.1% |
| Imperial Ginger Beer | Southern Tier Brewing Co | | 8.5% |
| Imperial Gingerbread Spiced Stout | Guinness Ltd. | Foreign / Export Stout | 11.0% |
| Imperial Gold Malt Liquor | Hawks Brewing | American Lager | 9.9% |
| Imperial Golden Nugget | Toppling Goliath | Imperial IPA | 8.0% |
| Imperial Grandious Verbiage | Magnify Brewing | | |
| Imperial Grind Coffee Stout | Mother's Brewing Company | American Imperial Stout | 10.5% |
| Imperial Gros Tigre | Les Grands Bois | American IPA | 4.0% |
| Imperial Gunner’s Daughter | Mast Landing Brewing Company | Sweet / Milk Stout | 10.0% |
| Imperial Hatter | New Holland Brewing Company | Imperial IPA | |
| Imperial Hawaiian Shirt Day | Triptych Brewing | American IPA | 8.2% |
| Imperial Hefeweizen | Pyramid Alehouse, Brewery and Restaurant - Berkeley | | 7.5% |
| Imperial Hemp Ale | Dangerous Man | American Strong Ale | 10.6% |
| Imperial Hemp Brown Ale (Bourbon Barrel Aged) | Dangerous Man | American Brown Ale | 10.6% |