| Othello | Barrel House Brewing Co. | | 8.7% |
| Othello | Barrelhouse Brewing Co. | | 8.7% |
| Other Hans | Brewski | American IPA | 6.9% |
| The Other Matt IPA | Double Mountain Brewery & Taproom | American IPA | 6.2% |
| Other Side | Tideland Brewing | | |
| Otherness One | Horus Aged Ales | Braggot | 15.6% |
| Otiose | The Bruery | Wild Ale | |
| Otis | Williams Brothers Brewing Company | American IPA | |
| Otis & Bean | Monkish Brewing Co. | Saison | 6.6% |
| Otis Alt | Elk Grove Brewery & Restaurant | American Brown Ale | 5.3% |
| Otra Vez | Sierra Nevada Brewing Co. | Gose | 4.5% |
| Otsuchi Old Stock Ale 2012 | North Coast Brewing Co. | Old Ale | 11.7% |
| Ottakringer Helles | Ottakringer Brauerei AG | | 5.1% |
| Ottakringer Wiener Original | Ottakringer Brauerei AG | Vienna Lager | 5.3% |
| Ottavia | Luppolo | | 7.0% |