| Katharina | Katherine Catharine Catherin Cathryn Katharine Katharyn |
| Katchina | kachina |
| Katharerin | Cathar |
| Katholin | papist |
| Katakana | katakana |
| Katana | katana |
| Katharer | Cathar |
| Katharsis | catharsis |
| Kithara | cithara kithara |
| Karäerin | Karaite |
| Tatarin | Tatar |
| Kachina | kachina |
| Katanga | Katanga |
| Katarerin | Qatari |
| Katarr | catarrh |
| Kathareuusa | Katharevousa |
| Katharevusa | Katharevousa |
| Kätzlein | kitten |
| kathartisch | cathartic |
| Katalane | Catalan |