| Omen Belgian-Style Raspberry Stout (2015) | Elysian Brewing Co. | | 7.9% |
| Omer Traditional Blond | Omer Vander Ghinste | Belgian Blonde Ale | 8.0% |
| OMER. Brut Nature | Omer Vander Ghinste | Brett Beer | 7.0% |
| Omerta | Bellwoods Brewery | American Pale Ale | 5.0% |
| OMG | Rapp Brewing Company | American Strong Ale | 20.0% |
| OMG Batch 17 | Rapp Brewing Company | American Strong Ale | 19.9% |
| Omission pale ale | Widmer Brothers Brewing | | |
| ommegang | Brouwerij Haacht NV | Belgian Pale Strong Ale | 8.0% |
| Ommegang Adoration | Brewery Ommegang | Belgian Dark Strong Ale | 10.0% |
| Ommegang XV - 15th Anniversary Ale | Brewery Ommegang | Belgian Dark Strong Ale | 9.6% |
| Ommegang XX - 20th Anniversary Ale | Brewery Ommegang | Belgian Dark Strong Ale | 11.5% |
| Ommegeddon | Brewery Ommegang | Wild Ale | 8.0% |
| Ommi Nr.62 | Borg Brugghús | | 9.1% |
| Omne Trium Perfectun | The BottleHouse | American Brown Ale | 8.0% |
| Omnipresent | To Øl | | 7.4% |