Cognomen Kuniej (Kuniej 
) , all over the world, is a very rare family name. The cognomen Kuniej is habitual in Poland, where it is a very rare surname, Argentina, where it is an extremely rare surname, and the United States. More prevalently, Kuniej is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kuniej | United States, Poland, Argentina |