| Kailey | Woman | English Names |
| Kaleigh | Woman | English Names |
| Kaley | Unisex | English Names |
| Kallima | Woman | English Names |
| Kamber | Unisex | English Names |
| Karenza | Woman | English Names |
| Karman | Man | English Names |
| Karston | Man | English Names |
| Kasani | Unisex | English Names |
| Kasen | Unisex | English Names |
| Kass | Unisex | English Names |
| Kat | Woman | English Names |
| Kate | Woman | English Names |
| Kathryn | Woman | English Names |
| Kathy | Woman | English Names |
| Katie | Woman | English Names |
| Katy | Woman | English Names |
| Kavin | Man | English Names |
| Keaton | Unisex | English Names |
| Keats | Unisex | English Names |