| Konkurs | bankruptcy |
| konfus | confused |
| Kontur | contour outline |
| konvers | function |
| Konfutse | Confucius |
| Kontor | office |
| konfuse | confuse |
| Kondor | condor |
| Konkani | Konkani |
| Konsens | consensus consent |
| Konsul | consul |
| Konsum | consumption |
| Konter | counter-attack |
| Kontra | con double |
| kontra | against versus |
| Konzern | group combine concern trust |
| Konzert | concert |
| konform | compliant conformable |
| konkav | concave |
| konkret | concrete |