| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| KJERSTI | - | Norwegian | ||
| KJERSTIN | SHESH-tin (Swedish) | Norwegian, Swedish | ||
| KJETIL | - | Norwegian | ||
| KLĀRA | - | Latvian | ||
| KLÁRA | - | Hungarian, Czech, Slovak | ||
| KLAAS | KLAH:S | Dutch, Low German | ||
| KLAES | - | Frisian | ||
| KLAHAN | - | Thai | ||
| KLAOS | KLAWS | Limburgish | ||
| KLARA | KLAH-rah (German, Russian, Polish) | Swedish, Norwegian, Danish, Icelandic, German, Russian, Ukrainian, Polish, Slovene, Croatian | ||
| KLAS | KLAHS | Swedish | ||
| KLASINA | klah-SEE-nah | Dutch | ||
| KLAUDIA | KLOWT-yah (Polish) | Polish, Slovak | ||
| KLAUDIE | - | Czech | ||
| KLAUDIJA | - | Croatian |