| Beer | Brewery | Style | ABV |
|---|---|---|---|
| Opaque Thoughts w/Guava | Mountains Walking | Imperial IPA | 8.0% |
| Ope! Berries | Four Fires Meadery | 10.0% | |
| Open Air | Oxbow Brewing Company | Saison | 6.5% |
| Open Arms | To Øl | American IPA | 7.0% |
| Open Container | Midnight Sun Brewing Co. | Wild Ale | 6.0% |
| Open Drums | Private Press Brewing | 16.2% | |
| Open Eye Signal | Whiplash | English IPA | 8.2% |
| Open Fermented Saison | Floodland Brewing | Saison | 2.9% |
| Open Sails | TrimTab Brewery | Wild Ale | 8.0% |
| Open Season | Rainwater Brewing | ||
| Open skies | Brouwerij Frontaal | New England IPA | 8.5% |
| Open Spaces | Side Project | Flanders Red Ale | |
| Open up & love again | The Veil Brewing Company | Wild Ale | |
| Open Up More | Anchorage Brewing Co | American Strong Ale | 15.5% |
| Open-fermented Barleywine | Zillicoah Beer Company | English Barleywine | 11.1% |