| Kontaktlinse | contact lens |
| Kontaktzunge | reed |
| Konvexlinse | convex lens |
| Kontaktgift | contact poison |
| kontaktieren | contact |
| Kontaktdaten | contact details |
| Kontaktdruck | contact print |
| Kontaktzaun | electric fence |
| Konkubine | concubine |
| Konstantin | Constantine |
| Kontakt | contact |
| Kontraktion | contraction |
| kontagiös | contagious |
| kontaktscheu | introvert unsociable |
| Kaltakquise | cold call |
| Startlinie | starting line |
| Konduktion | conduction |
| Konfutse | Confucius |
| Konstanze | Constance |
| Kontaktangaben | contact details |