| Kommemoration | commemoration |
| Kommunikation | communication |
| Kommutation | substitution test |
| Komparation | comparison |
| Kompensation | compensation |
| Kollaboration | collaboration |
| Konsekration | dedication |
| Konzentration | concentration |
| Kooperation | cooperation co-operation |
| Kontemplation | contemplation |
| Kommentator | commentator |
| Komposition | composition |
| Akkommodation | accommodation |
| Kombination | combination |
| Komplikation | complication |
| Kammerton | standard pitch |
| Memoisation | memoization |
| Dekoration | decoration |
| Melioration | melioration |
| Konspiration | conspiracy |