| Kolonisator | colonizer |
| Kolonisation | colonisation |
| Kolonist | colonist |
| Kolonistin | colonist |
| Ionisator | ioniser ionizer |
| kolonial | colonial |
| Dekolonisation | decolonization decolonisation |
| Koloratur | coloratura |
| Kanonisation | canonization |
| Organisator | organizer |
| Kondensator | capacitor |
| Kompilator | compiler |
| Koordinator | coordinator |
| Kultivator | cultivator |
| Ozonator | ozonator |
| Polyhistor | polymath |
| Kolbenmotor | piston engine |
| Kollektor | collector |
| Kolligation | colligation |
| Kolorismus | colorism |