| Konsekration | dedication |
| Konspiration | conspiracy |
| Kondensation | condensation |
| Konkretion | concretion |
| Konsultation | consultation |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konstellation | constellation |
| Konversation | conversation |
| Konvokation | convocation |
| Konzentration | concentration |
| Kooperation | cooperation co-operation |
| Konduktion | conduction |
| Konsumtion | consumption |
| Konurbation | conurbation |
| Konfiguration | configuration |
| Konfirmation | confirmation |
| Konfiskation | confiscation |
| Konformation | conformation |
| Konföderation | confederation |
| Konjugation | conjugation |