| Koshihikari Echigo Beer | Uehara Shuzou Co. Ltd. / Echigo Beer Pub | Japanese Rice Lager | 5.0% |
| Kosmyk Charlie's Y2K Catastrophe Ale | Central Waters Brewing Company | American Barleywine | 10.0% |
| Koytus | Scuttlebutt Brewing | Herb and Spice Beer | 5.4% |
| Kozel Premium | Pivovar Velk Popovice | | 5.0% |
| Kozlov Stout | ThirstyBear Brewing | American Stout | |
| Krakatau Bourbon Aged | Nya Carnegiebryggeriet | Russian Imperial Stout | |
| Krakatoa | Night Shift Brewing | | |
| Krakatu | Nya Carnegiebryggeriet | American Imperial Stout | 9.2% |
| Krakus | Browar Zywiec | | |
| Krampus | Birrificio Del Ducato | Belgian Dark Strong Ale | 7.0% |
| Krampus Imperial Helles Lager | Southern Tier Brewing Co | Imperial Pilsner | 9.0% |
| Krank Shaft | Metropolitan Brewing | Kölsch | 5.0% |
| The Krasier | Avery Brewing Company | | |
| Kräusen Naturtrüb | Brauhaus Faust | | |
| Krazy Pucker | Two Roads Brewing Co. | Berliner Weisse | 3.2% |