| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kaiden | KAY-dən | English (Modern) | ||
| Kaija | KIE-yah | Finnish | ||
| Kaila | - | Yiddish | ||
| Kailee | KAY-lee | English (Modern) | ||
| Kailey | KAY-lee | English (Modern) | ||
| Kailyn | KAY-lin | English (Modern) | ||
| Kaisa | KIE-sah (Finnish) | Finnish, Estonian | ||
| Kaiser | - | Various | ||
| Kaitlin | KAYT-lin | English (Modern) | ||
| Kaitlyn | KAYT-lin | English (Modern) | ||
| Kaitlynn | KAYT-lin | English (Modern) | ||
| Kaito | kah-ee-to | Japanese | ||
| Kaj (1) | KIE (Swedish) | Swedish, Danish, Norwegian | ||
| Kaj (2) | KIE | Swedish (Rare) | ||
| Kaja (1) | KAH-yah (Swedish, Estonian) | Norwegian, Danish, Swedish, Estonian, Slovene |