| Oberon | Bell's Brewery, Inc. | American Pale Wheat Beer | 5.8% |
| Oberon Eclypse | Bell's Brewery, Inc. | | |
| OBF | AleSmith Brewing Company | Flanders Oud Bruin | 7.0% |
| Obi Owl Kenobi | Brouwerij het Uiltje | American IPA | 7.2% |
| The Object | Earnest Brew Works | | 8.2% |
| The Object of Devotion | Floodland Brewing | | |
| Object Oriented | Spyglass Brewing Company | New England IPA | 8.3% |
| Object Permanence | Kane Brewing Company | English Barleywine | 11.8% |
| Object Permanence - Bourbon Barrel | Kane Brewing Company | American Barleywine | |
| Object Permanence - Armagnac Cask | Kane Brewing Company | American Barleywine | |
| Object Permanence- Cognac Barrel | Kane Brewing Company | American Barleywine | |
| Object Permanence- Rye Barrel | Kane Brewing Company | American Barleywine | |
| Objectification | Transient Artisan Ales | Wild Ale | 6.5% |
| Obligatory Manifestation of Malt | Cigar City Brewing | American Barleywine | 11.0% |
| Obliteration I | Midnight Sun Brewing Co. | Imperial IPA | 8.5% |