| Ko | Man | Japanese Names |
| Koa | Man | Hawaiian Names |
| Koala | Unisex | Aboriginal Names |
| Kobe | Man | Hebrew Names |
| Kochava | Woman | Hebrew Names |
| Kodjo | Man | African - Akan of Ghana Names |
| Kody | Unisex | Irish Names |
| Koen | Man | Dutch Names |
| Kofi | Man | African - Twi of Ghana Names |
| Kohaku | Unisex | Japanese Names |
| Kohana | Woman | Japanese Names |
| Koharu | Woman | Japanese Names |
| Kohei | Man | Japanese Names |
| Koichi | Man | Japanese Names |
| Koit | Man | Estonian Names |
| Koji | Man | Japanese Names |
| Kojo | Man | African - Akan Names |
| Koko | Woman | Japanese Names |
| Kokuro | Woman | Japanese Names |
| Kole | Man | Slavic Names |