| Konfirmation | confirmation |
| Konformation | conformation |
| Konfiskation | confiscation |
| Konspiration | conspiracy |
| Konurbation | conurbation |
| Konfiguration | configuration |
| Konversation | conversation |
| Konziliation | reconciliation settlement |
| Affirmation | affirmation |
| Information | information |
| Kondensation | condensation |
| Konkretion | concretion |
| Konsekration | dedication |
| Konsultation | consultation |
| Konsumtion | consumption |
| Kondition | condition |
| Konfabulation | confabulation |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konfrontation | confrontation |
| Konföderation | confederation |