| kalorienarm | low-calorie |
| Kalorie | calorie |
| Kalorimeter | calorimeter |
| Kalabrier | Calabrian |
| Kalligramm | calligram |
| Kalorimetrie | calorimetry |
| Kalabrien | Calabria |
| kalorisch | caloric |
| Caloricum | phlogiston |
| Lorient | Lorient |
| kolorieren | color colorize colour |
| Karien | Caria |
| Karrier | English Carrier |
| Kastrierer | castrator |
| Karriere | career |
| kariert | chequered checked checkered |
| kastriert | castrated |
| Malaienbär | sun bear |
| Kostenart | cost element |
| koronar | coronary |