| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| KOUKI | ko:-kee | Japanese | ||
| KOURTNEY | KORT-nee | English (Modern) | ||
| KOUTA | ko:-tah | Japanese | ||
| KRASIMIR | - | Bulgarian, Medieval Slavic | ||
| KRASIMIRA | - | Bulgarian | ||
| KRASTIO | - | Bulgarian | ||
| KRASTYO | - | Bulgarian | ||
| KRASTYU | - | Bulgarian | ||
| KREŠIMIR | - | Croatian | ||
| KREŠIMIRA | - | Croatian | ||
| KREŠO | - | Croatian | ||
| KREINDEL | - | Yiddish | ||
| KREINE | - | Yiddish | ||
| KREIOS | - | Greek Mythology | ||
| KREKA | - | History |