| Kasematte | casemate |
| Käsemacher | cheesemaker |
| Käsemilbe | cheese mite |
| Kassette | cassette |
| Käseblatt | local rag |
| Hängematte | hammock |
| Fußmatte | doormat |
| Mausmatte | mouse mat mousepad |
| Kammratte | ctenomyid tuco-tuco |
| Leseratte | bookworm |
| Kalette | culet |
| Karmette | Tenebrae |
| Kaskade | waterfall cascade |
| Kassetten | coffer |
| Kastrat | castrato |
| Käsemesser | cheese knife |
| Käsereibe | cheese grater |
| Kasache | Kazakh Kazak |
| Kaserne | barrack barracks |
| Kastanie | chestnut tree chestnut |