| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kato | - | Eastern African, Ganda | ||
| KatrÍN | - | Icelandic | ||
| Katrien | kaht-REEN | Dutch | ||
| Katrijn | kaht-RIEN | Dutch | ||
| Katrina | kə-TREE-nə (English), kaht-REE-nah (Dutch) | English, German, Swedish, Dutch | ||
| Kawacatoose | - | Native American, Cree | ||
| Kay (2) | - | Welsh Mythology, Arthurian Romance | ||
| Kayin (1) | - | Western African, Yoruba | ||
| Kayin (2) | - | Biblical Hebrew | ||
| Kayode | - | Western African, Yoruba | ||
| KazimÍR | - | Czech, Slovak, Hungarian | ||
| Kazimir | kah-zee-MEER (Russian) | Russian, Medieval Slavic | ||
| Keavy | KEE-vee | Irish, Scottish | ||
| Kees | KAY:S | Dutch | ||
| Kefilwe | - | Southern African, Tswana |