| Ommi Nr.62 | Borg Brugghús | | 9.1% |
| Omne Trium Perfectun | The BottleHouse | American Brown Ale | 8.0% |
| Omnipresent | To Øl | | 7.4% |
| Omniscience & Proselytism | Jester King Craft Brewery | Wild Ale | 5.0% |
| Omniscient Signal | Public Access Liquids | | |
| Omphalos | Forest & Main | American Barleywine | 10.0% |
| OMS | Hamburg Brewing Company | Oatmeal Stout | 5.3% |
| On & On | Revolution Brewing LLC | Robust Porter | 14.0% |
| On & On: Part 2 | Half Acre Beer Company | Rye Beer | 13.7% |
| On A Whim - Orange Marmalade Barleywine | Brouwerij Frontaal / Dugges Bryggeri | | 11.0% |
| On and On | Magnify Brewing | | |
| On Cassette | New Anthem Beer Project | New England IPA | 8.1% |
| On Fireee | Magnify Brewing | | |
| On Fleek | Stillwater Artisanal Ales | American Imperial Stout | 13.0% |
| On Fleek | Stillwater Artisanal Ales/Casita Cerveceria | Russian Imperial Stout | 13.0% |