| Oil Man Vanilla | Elevator Brewing Company | American Imperial Stout | 10.8% |
| Oil of Aphrodite | Jackie O's Pub & Brewery | American Imperial Stout | 10.0% |
| Oil of Aphrodite - Almond and Vanilla Bourbon | Jackie O's Pub & Brewery | | 12.4% |
| Oil of Aphrodite - Rum Barrel Aged | Jackie O's Pub & Brewery | American Imperial Stout | 10.0% |
| Oil of Aphrodite Extra Reserve | Jackie O's Pub & Brewery | American Imperial Stout | 13.3% |
| Oil of Aphrodite with Walnut | Jackie O's Pub & Brewery | American Imperial Stout | 9.0% |
| Oil of Gladness | Dark Horse / Three Floyds | American Barleywine | 11.0% |
| Oil of Gladness | Three Floyds / Dark Horse | American Barleywine | 11.0% |
| Oil Piers Gingerbread Spiced Porter | Surf Brewery | American Porter | 6.5% |
| Oil Rig | Ritual Brewing Co | Imperial IPA | 7.0% |
| Oil Rigger Stout | HopCat | Russian Imperial Stout | 10.5% |
| Oil Spill | To Øl | New England IPA | 10.5% |
| Oinj | Freak Folk Bier | Wild Ale | 7.0% |
| The Oister | De Garde Brewing | Wild Ale | 5.5% |
| OJ Run | Narrow Gauge Brewing Company | Imperial IPA | 8.6% |