| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kiyoko | kee-yo-ko | Japanese | ||
| Kiyoshi | kee-yo-shee | Japanese | ||
| Kobina | - | Western African, Akan | ||
| Kofi | - | Western African, Akan | ||
| Kohaku | ko-hah-koo | Japanese | ||
| Koharu | ko-hah-ṙoo | Japanese | ||
| Koit | - | Estonian | ||
| Kojo | - | Western African, Akan | ||
| Kokoro | ko-ko-ṙo | Japanese | ||
| Komang | - | Indonesian, Balinese | ||
| Koralo | ko-RAH-lo | Esperanto | ||
| Kotone | ko-to-ne | Japanese | ||
| Kouki | ko:-kee | Japanese | ||
| Kouta | ko:-tah | Japanese | ||
| Krisna | KREES-nah | Indonesian |