| Kataphora | cataphora |
| Kataphrakt | cataphract |
| Adiaphora | adiaphora adiaphoron |
| Katanga | Katanga |
| Katarr | catarrh |
| Katchina | kachina |
| Kathole | papist |
| Katakana | katakana |
| Katalog | catalog catalogue |
| Katamaran | catamaran |
| Katana | katana |
| Katapult | catapult |
| Katar | Qatar |
| Katarer | Qatari |
| Katarrh | catarrh |
| Kataster | land register cadastre |
| Kathode | cathode |
| katathym | katathym |
| katotherm | katothermal |
| Matador | bullfighter |