| Konkussion | concussion |
| Konfession | denomination |
| Konfusion | bewilderment |
| Konklusion | conclusion |
| Konvulsion | convulsion |
| Konzession | concession admission licence |
| Konduktion | conduction |
| Konkretion | concretion |
| Konsumtion | consumption |
| Kontorsion | contortion |
| Konversion | conversion |
| Diskussion | discussion |
| Perkussion | percussion |
| Kommission | commission committee |
| Kollusion | collusion |
| Kondition | condition |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Konjugation | conjugation |
| Konjunktion | conjunction |
| Konkubine | concubine |