| Öö | Põhjala | Baltic Porter | 10.5% |
| Öö Cassis | Põhjala | Baltic Porter | 10.5% |
| Öö X | Põhjala | Baltic Porter | 13.0% |
| Oo Xo | Põhjala / Jester King Brewery | Baltic Porter | 11.5% |
| Öö XO (Cellar Series) | Põhjala | Baltic Porter | 11.5% |
| Ooh La La | Horus Aged Ales | Wild Ale | 6.8% |
| Ook Best Lekker! | Brouwerij De Molen | Wild Ale | 6.5% |
| Oompa Loompa | Fat Head's Brewery & Saloon | American Stout | 6.5% |
| Oompa Loompa Chocolate Stout | Rocky River Brewing | | |
| Oops! All | DSSOLVR | | |
| Oopsie Dhazy! | Knee Deep Brewing | New England IPA | 6.8% |
| Oort | Ecliptic Brewing Company | American Imperial Stout | 8.5% |
| Oort Cloud | To Øl | New England IPA | 4.5% |
| Oosik Amber Ale | Midnight Sun Brewing Co. | American Amber / Red Ale | 5.0% |
| Op & Top | Brouwerij De Molen | English IPA | 4.5% |