| Kotono | Woman | Japanese Names |
| Kotoyo | Woman | Japanese Names |
| Kouki | Man | Japanese Names |
| Koume | Woman | Japanese Names |
| Kouta | Man | Japanese Names |
| Kozakura | Woman | Japanese Names |
| Kozue | Unisex | Japanese Names |
| Kozuye | Woman | Japanese Names |
| Kuma | Woman | Japanese Names |
| Kumi | Unisex | Japanese Names |
| Kumiko | Woman | Japanese Names |
| Kunihide | Man | Japanese Names |
| Kunihiro | Man | Japanese Names |
| Kuniko | Woman | Japanese Names |
| Kuniye | Woman | Japanese Names |
| Kuniyuki | Man | Japanese Names |
| Kura | Woman | Japanese Names |
| Kuri | Woman | Japanese Names |
| Kuro | Man | Japanese Names |
| Kurou | Man | Japanese Names |