| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kadek | - | Indonesian, Balinese | ||
| Kadri | KAHD-rree | Estonian | ||
| Kaede | kah-e-de | Japanese | ||
| Kaia | - | Norwegian, Estonian | ||
| Kaisa | KIE-sah (Finnish) | Finnish, Estonian | ||
| Kaito | kah-ee-to | Japanese | ||
| Kaja (1) | KAH-yah (Swedish, Estonian) | Norwegian, Danish, Swedish, Estonian, Slovene | ||
| Kaja (3) | KAH-yah | Estonian | ||
| Kalev (1) | - | Estonian | ||
| Kalju | - | Estonian | ||
| KandaĴA | kahn-DAH-zhah | Esperanto | ||
| Kanon | kah-non | Japanese | ||
| Kaori | kah-o-ṙee | Japanese | ||
| Kaoru | kah-o-ṙoo | Japanese | ||
| Karesinda | kah-re-SEEN-dah | Esperanto |