| Oakey Dokey | 3 Sheeps Brewing Company | American IPA | 7.3% |
| Oaki Loki | Paddock Wood | Imperial IPA | |
| Oakpocalypse | Revolution Brewing LLC | American Barleywine | 16.5% |
| Oakpocalypse Later | Revolution Brewing LLC | American Barleywine | 16.5% |
| Oakpocalypse Now | Firestone Walker Brewing Co. | American Barleywine | 11.8% |
| Oakspire | New Belgium Brewing | American Strong Ale | 9.0% |
| Oakspire | Sierra Nevada Brewing Co. | American Strong Ale | 9.0% |
| Oaktoberfest | Black Oak Brewing Co. | Märzen | 5.0% |
| Oaktoberfest | Firestone Walker Brewing Co. | Märzen | |
| Oaktoberfest | Live Oak Brewing | Märzen | |
| Oaktown Brown | Calicraft Brewing Co. | American Brown Ale | 6.7% |
| Oaky Golden Pucker | Jackie O's Pub & Brewery | Wild Ale | |
| Oaky Moaky | Brouwers Verzet | | 7.5% |
| Oamaru Kriek | Craftwork | Fruit Lambic | 6.0% |
| Oarsman | Bell's Brewery, Inc. | Berliner Weisse | 4.0% |