| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kitty | KIT-ee | English | ||
| KivanÇ | - | Turkish | ||
| Kiyoko | kee-yo-ko | Japanese | ||
| Kiyoshi | kee-yo-shee | Japanese | ||
| Kizzie | KIZ-ee | English | ||
| Kizzy | KIZ-ee | English | ||
| Kjeld | - | Danish | ||
| Kjell | SHEL | Swedish, Norwegian | ||
| Kjerstin | SHESH-tin (Swedish) | Norwegian, Swedish | ||
| KlÁRa | - | Hungarian, Czech, Slovak | ||
| Klaes | - | Frisian | ||
| Klaos | KLAWS | Limburgish | ||
| Klara | KLAH-rah (German, Russian, Polish) | Swedish, Norwegian, Danish, Icelandic, German, Russian, Ukrainian, Polish, Slovene, Croatian | ||
| Klas | KLAHS | Swedish | ||
| Klaudia | KLOWT-yah (Polish) | Polish, Slovak |