| Beer | Brewery | Style | ABV |
|---|---|---|---|
| Optimator | Spaten-Franziskaner-Bräu | Doppelbock | 7.2% |
| Opulence | Jackie O's Pub & Brewery | Wild Ale | 8.3% |
| Opuntia | Avery Brewing Company | Wild Ale | 6.7% |
| Opus | 4 Hands Brewing Co. | Saison | 5.0% |
| Opus Kriek | Arclight Brewing Company | Fruit Lambic | 5.3% |
| Or | Cigar City Brewing | Black IPA | 11.2% |
| Or xata | The Bruery | ||
| Orabelle | Great Divide Brewing Company | Tripel | 8.3% |
| Orach Slie | Harviestoun Brewery | European Pale Lager | 6.0% |
| The Oracle | Bell's Brewery, Inc. | Imperial IPA | 10.0% |
| The Oracle | White Pony Microbrewery | 10.7% | |
| Oracle of the Bottle | Modern Times | Wild Ale | |
| Oragami Spaceship | Defiance Brewing Company | Saison | |
| Orange & Black Congrats Ale | Moylan's Brewery & Restaurant | Black IPA | 6.0% |
| Orange Avenue Wit | Coronado Brewing Company | Witbier | 5.2% |