| Konformation | conformation |
| Konfirmation | confirmation |
| Information | information |
| Konurbation | conurbation |
| Konfiskation | confiscation |
| Konfrontation | confrontation |
| Konföderation | confederation |
| Konnotation | connotation |
| Konversation | conversation |
| Konvokation | convocation |
| Formation | formation |
| Reformation | Reformation reformation |
| Kondensation | condensation |
| Konformist | conformist |
| Konkretion | concretion |
| Konsekration | dedication |
| Konspiration | conspiracy |
| Konsultation | consultation |
| Konsumtion | consumption |
| Kontorsion | contortion |