| kopfunter | head down |
| kopfüber | headlong head first head over heels head-first headfirst |
| Kopfjäger | headhunter |
| Kopffüßer | cephalopod |
| Kopfhörer | headphone |
| Counter | counter |
| Punter | punter |
| Konter | counter-attack |
| Kopfnuss | brain-teaser |
| Kopfnuß | brainteaser |
| Kopfsteuer | poll tax |
| Kopfweh | headache |
| Koppler | coupling |
| Kopte | Copt |
| kopfscheu | timid |
| Kopfpolster | cushion |
| Kopfstein | cobblestone |
| Kopierer | photocopier copier |
| Köper | twill |
| Köpfchen | brain head |