| Konurbation | conurbation |
| Konkretion | concretion |
| Konsultation | consultation |
| Konfirmation | confirmation |
| Konformation | conformation |
| Konjugation | conjugation |
| Konnotation | connotation |
| Kontraktion | contraction |
| Kontribution | tribute |
| Konversation | conversation |
| Konvokation | convocation |
| Koedukation | coeducation |
| Kopulation | copulation |
| Kuration | cure |
| Kondensation | condensation |
| Konduktion | conduction |
| Konsekration | dedication |
| Konspiration | conspiracy |
| Konsumtion | consumption |
| Kondition | condition |