| Name | Gender | Meaning | Favorites |
| Kaemon | Boy | Joyful | |
| Kagami | Girl | Mirror | |
| Kaiya | Girl | Forgiveness | |
| Kaiyo | Girl | Forgiveness | |
| Kami | Girl | Divine aura | |
| Kamin | Girl | Joyful | |
| Kana | Girl | Powerful | |
| Kaori | Girl | Strong | |
| Kaoru | Girl | Fragrant | |
| Kei | Girl | Reverent | |
| Keiko | Girl | Blessing | |
| Keitaro | Boy | Blessed | |
| Kiaria | Girl | Fortunate | |
| Kin | Girl | Golden | |
| Kioko | Girl | Meets world with happiness | |
| Kioshi | Boy | Quiet | |
| Kishi | Girl | Happy life | |
| Kiyoshi | Girl | Quiet child | |
| Kohana | Girl | Little flower | |
| Koko | Girl | Stork | |
