| Konzerngewinn | consolidated profit |
| Konzertierung | conciliation |
| Konzertina | concertina |
| Konvergenz | convergence |
| Konzertreise | concert tour |
| konvergent | convergent |
| konzertieren | give a concert concert |
| kanzerogen | cancer-causing carcinogenic |
| Reingewinn | net profit |
| Kondensation | condensation |
| Konkretion | concretion |
| Kontingent | contingent |
| kontingent | contingent |
| Konzernmutter | parent company |
| konsanguin | consanguineous |
| konzenterieren | center |
| Konferenz | conference |
| Konservierung | conservation preservation mothballing momification |
| Konterfei | portrait |
| Kontingenz | contingency attunement |