| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Karma | - | Bhutanese | ||
| Kasih | - | Indonesian, Malay | ||
| Kasumi | kah-soo-mee | Japanese | ||
| Katariina | KAH-tah-ree:-nah (Finnish) | Finnish, Estonian | ||
| Katashi | kah-tah-shee | Japanese | ||
| Kati | KAH-tee (Finnish) | Finnish, Estonian, Hungarian | ||
| Katida | kah-TEE-dah | Esperanto | ||
| Katrin | kah-TREEN (German, Swedish) | German, Swedish, Estonian | ||
| Katsu | kah-tsoo | Japanese | ||
| Katsuo | kah-tsoo-o | Japanese | ||
| Katsuro | kah-tsoo-ṙo: | Japanese | ||
| Katsurou | kah-tsoo-ṙo: | Japanese | ||
| Kayin (1) | - | Western African, Yoruba | ||
| Kayode | - | Western African, Yoruba | ||
| Kazue | kah-zoo-e | Japanese |