| Kompaniefeldwebel | company sergeant major |
| Hauptfeldwebel | sergeant major |
| kompatibel sein | support |
| kompatibel | compatible |
| Feldwebel | staff sergeant |
| kommandieren | command |
| komparierbar | comparable |
| Kompanie | company |
| Kompassnadel | compass needle |
| komparabel | comparable |
| komparieren | compare |
| kompilieren | compile |
| komplementieren | complement |
| komplimentieren | escort |
| komponieren | compose |
| Kampanile | campanile |
| manifestieren | demonstrate |
| Körpergewebe | tissue |
| Koaxialkabel | coaxial cable |
| Kommandeurinseln | Commander Islands |