| Kaltakquise | cold call |
| Akquise | acquisition |
| Kaltanruf | cold call |
| Altarweihe | consecration |
| Altruist | altruist |
| Katakombe | catacomb |
| Kontaktlinse | contact lens |
| Marquise | marchioness marquise |
| Malaise | ailment |
| Waldameise | wood ant |
| Weltkrise | world-wide crisis |
| Kalaallisut | Greenlandish |
| Kalabrier | Calabrian |
| Kalabrisch | Calabrian |
| kalabrisch | Calabrian |
| Kaldaunen | tripe |
| Kalkerde | quicklime |
| Kalkfarbe | calcimine |
| Kalkputz | plaster |
| Kalktuff | tufa |