| Konsumgut | final good |
| Konsument | consumer |
| Konsulat | consulate |
| Konsum | consumption |
| Konsumquote | consumption rate |
| Kondiment | condiment |
| Konfucius | Confucius |
| Konfuzius | Confucius |
| Konsumtion | consumption |
| Konsumware | commodity |
| konsanguin | consanguineous |
| Konsensus | consensus |
| Konsommee | consomme |
| Konsonant | consonant |
| Konspekt | summary |
| Konsul | consul |
| Konvolut | envelope |
| konjugal | conjugal |
| konstant | constant constantly |
| Joensuu | Joensuu |