| Koschei the Deathless | White Street Brewing Co. | Russian Imperial Stout | 13.0% |
| Koshihikari Echigo Beer | Uehara Shuzou Co. Ltd. / Echigo Beer Pub | Japanese Rice Lager | 5.0% |
| Kosmic Mother Funk | Samuel Adams | | 6.5% |
| Kosmonaut (Bourbon Barrel-Aged | Alvarium Beer Company | Russian Imperial Stout | 10.1% |
| Kosmos | Põhjala | | 5.5% |
| Kosmyk Charlie's Y2K Catastrophe Ale | Central Waters Brewing Company | American Barleywine | 10.0% |
| Kotbusser | Freigeist Bierkultur | Fruit and Field Beer | 6.0% |
| Kotbusser (For The Sex Pistols) | Zebulon Artisan Ales | Gose | 4.2% |
| Kow Lime Pie | Bolero Snort | | 4.9% |
| Koyt | Jopen | Gruit / Ancient Herbed Ale | 8.5% |
| Koytus | Scuttlebutt Brewing | Herb and Spice Beer | 5.4% |
| Kozel Premium | Pivovar Velk Popovice | | 5.0% |
| Kozlov Stout | ThirstyBear Brewing | American Stout | |
| KP's Mango Berliner Weisse | Boatrocker Brewing Company | Berliner Weisse | 5.0% |
| Krachtig Blond | Brand Bierbrouwerij | Belgian Blonde Ale | 7.8% |