| Katashi | Man | Japanese Names |
| Katsu | Unisex | Japanese Names |
| Katsuki | Woman | Japanese Names |
| Katsuko | Woman | Japanese Names |
| Katsumi | Man | Japanese Names |
| Katsunori | Man | Japanese Names |
| Katsuo | Man | Japanese Names |
| Katsuro | Man | Japanese Names |
| Katsurou | Man | Japanese Names |
| Katsuye | Woman | Japanese Names |
| Kayo | Woman | Japanese Names |
| Kayoko | Woman | Japanese Names |
| Kazane | Woman | Japanese Names |
| Kazou | Man | Japanese Names |
| Kazu | Woman | Japanese Names |
| Kazuaki | Man | Japanese Names |
| Kazuhito | Man | Japanese Names |
| Kazuki | Man | Japanese Names |
| Kazuko | Woman | Japanese Names |
| Kazuma | Man | Japanese Names |