| Katoblepas | catoblepas |
| Kathole | papist |
| Katholikos | catholicos |
| Kätzlein | kitten |
| Katalepsie | catalepsy |
| Katalexe | catalexis |
| Kattegat | Kattegat |
| katotherm | katothermal |
| Tobias | Tobin Tobias |
| Zytoblast | cytoblast |
| Koblenz | Koblenz |
| Ablegat | ablegate |
| Nationalepos | national epic |
| Topas | topaz |
| Katanga | Katanga |
| Katarerin | Qatari |
| Katasteramt | cadastre |
| Katchina | kachina |
| Katechetin | catechist |
| Katharerin | Cathar |