| kontextfrei | context-free |
| Konterfei | portrait |
| kostenfrei | cost-free free of cost |
| Konditorei | confectionery pastry shop |
| Kontext | context |
| Kontextmenü | context menu |
| kontextuell | contextual |
| koffeinfrei | decaffeinated |
| Konterbier | hair of the dog |
| Konventikel | conventicle |
| Konzetti | extended metaphor |
| konnektieren | bind |
| kontaktfreudig | outgoing |
| kontrieren | double |
| Konfetti | confetti |
| Konfitüre | jam confiture |
| Konjektur | conjecture |
| Konnetabel | constable |
| Konter | counter-attack |
| Konzentrat | concentrate |