| Old Engine Oil Engineer's Reserve Blackest Ale | Harviestoun Brewery | English Porter | 9.0% |
| Old Engine Oil Special Reserve (aged in malt whisky casks) | Harviestoun Brewery | | 8.0% |
| Old Engine Zymatore | Harviestoun Brewery | English Porter | 6.0% |
| Old English Ale | San Marcos Brewery & Grill | Old Ale | |
| Old Enough To Drink | Brouwerij het Uiltje | | 21.0% |
| Old Ephraim | Uinta Brewing Company | Flanders Oud Bruin | 6.7% |
| Old Evil | Ever Grain Brewing Co. | English Barleywine | 15.0% |
| Old Evil | Structures Brewing | Helles | 4.8% |
| Old Faithful Ale | Grand Teton Brewing Co. | American Pale Ale | |
| Old Faithorn | Solemn Oath | American Pale Ale | |
| Old Fashion - Inspired Old Ale | Goose Island Beer Co. | Old Ale | 11.0% |
| Old Fashioned | Anderson Valley Brewing | American Strong Ale | 8.3% |
| The Old Fashioned | Angry Orchard Hard Cider | | |
| Old Fashioned | Brooklyn Brewery | Rye Beer | 12.8% |
| Old Fashioned | Saint Arnold Brewing Company | American Barleywine | 12.9% |