| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kay (2) | - | Welsh Mythology, Arthurian Romance | ||
| Kay (3) | KIE (Swedish) | Frisian, German, Swedish, Norwegian, Danish | ||
| Kaycee | KAY-see | English (Modern) | ||
| Kayden | KAY-dən | English (Modern) | ||
| Kaydence | KAY-dənts | English (Modern) | ||
| Kaye | KAY | English | ||
| Kayin (1) | - | Western African, Yoruba | ||
| Kayla (1) | KAY-lə | English | ||
| Kayla (2) | - | Yiddish | ||
| Kayleah | KAY-lee | English (Rare) | ||
| Kaylee | KAY-lee | English (Modern) | ||
| Kayleen | KAY-leen | English (Rare) | ||
| Kayleigh | KAY-lee | English (Modern) | ||
| Kayley | KAY-lee | English (Modern) | ||
| Kaylie | KAY-lee | English (Modern) |