| Katrice | Woman | American Names |
| Katriel | Unisex | Hebrew Names |
| Katrien | Woman | Dutch Names |
| Katrin | Woman | Scandinavian - Icelandic Names |
| Katrina | Woman | German Names |
| Katsu | Unisex | Japanese Names |
| Katsuki | Woman | Japanese Names |
| Katsuko | Woman | Japanese Names |
| Katsumi | Man | Japanese Names |
| Katsunori | Man | Japanese Names |
| Katsuo | Man | Japanese Names |
| Katsuro | Man | Japanese Names |
| Katsurou | Man | Japanese Names |
| Katsuye | Woman | Japanese Names |
| Katungi | Man | African Names |
| Katy | Woman | English Names |
| Katya | Woman | Russian Names |
| Katz | Unisex | German Names |
| Kaui | Man | Hawaiian Names |
| Kaula | Woman | African Names |