| Kasteel Donker | Castle Brewery | Quadrupel (Quad) | 11.0% |
| Kasteel Rouge | Brouwerij Van Honsebrouck | Fruit and Field Beer | 8.0% |
| Kasteel Rouge | Castle Brewery | Quadrupel (Quad) | 8.0% |
| Kasteel Tripel | Brouwerij Van Honsebrouck | Tripel | 11.0% |
| Kasteel Winter | Brouwerij Van Honsebrouck | Belgian Dark Strong Ale | 11.0% |
| Kasteel Winter | Castle Brewery | Belgian Dark Strong Ale | 11.0% |
| Kataja Olut IVB | Lammin Sahti Oy | | 7.0% |
| Kate the Great | Holy City Brewing | Tripel | 8.8% |
| Kate The Great Russian Imperial Stout | Portsmouth Brewery | American Imperial Stout | 9.5% |
| Katy | 2nd Shift Brewery | Wild Ale | 5.4% |
| Katy | Second Shift Brewing | Wild Ale | 5.4% |
| Katyusha | Ras l'Bock | Russian Imperial Stout | 11.9% |
| Katz Pis | Evil Twin | American IPA | 6.5% |
| Kavorka | Solemn Oath | Russian Imperial Stout | |
| Kayak Kölsch | Lake Superior Brewing | | |