| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kipling | KIP-ling | English (Rare) | ||
| Kira (2) | KEE-rə | English | ||
| Kirby | KUR-bee | English | ||
| Kirk | KURK | English | ||
| Kirsten | KEER-sten (Danish, Norwegian), KUR-stən (English) | Danish, Norwegian, English | ||
| Kit | KIT | English | ||
| Kitty | KIT-ee | English | ||
| Kizzie | KIZ-ee | English | ||
| Kizzy | KIZ-ee | English | ||
| Klara | KLAH-rah (German, Russian, Polish) | Swedish, Norwegian, Danish, Icelandic, German, Russian, Ukrainian, Polish, Slovene, Croatian | ||
| Klavdija | - | Slovene | ||
| Kleisthenes | - | Ancient Greek | ||
| Kleitos | - | Ancient Greek | ||
| Klemen | - | Slovene | ||
| Klementina | - | Slovene, Croatian |