| Kivak | - | Eskimo Name | Kivi | - | Finnish Name |
| Kivuq | - | Eskimo Name | Kiwi | - | Indian Name |
| Kix | - | American Name | Kiy | - | Ukrainian Name |
| Kiyan | - | Assyrian Name | Kiyon | - | Irish Name |
| Kiyoshi | - | Japanese Name | Kjallakur | - | Icelandic Name |
| Kjartan | - | Icelandic Name | Kjartanus | - | Icelandic Name |
| Kjell | - | Icelandic Name | Klaas | - | Greek Name |
| Klaus | - | Danish Name | Klayton | - | English Name |
| Kleber | - | Portuguese Name | Klemens | - | Icelandic Name |
| KLIMENT | - | Russian Name | Klym | - | Ukrainian Name |
| Klyment | - | Ukrainian Name | Klymentiy | - | Ukrainian Name |
| Klymko | - | Ukrainian Name | Knoton | - | American Name |
| Knox | - | English Name | Knud | - | Danish Name |
| Knut | - | Norse Name | Koa | - | Hawaiian Name |
| Kobe | - | Japanese Name | Kobe | - | Hebrew Name |
| Kobe | - | Philippines Name | Kobi | - | English Name |
| Kobi | - | Hungarian Name | Kobie | - | English Name |
| Koby | - | German Name | Koda | - | African Name |
| Kodie | - | English Name | Kody | - | English Name |
| Koen | - | Dutch Name | Koenraad | - | Dutch Name |
| Kofi | - | African Name | Kohana | - | American Name |
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