Family name Чуюн (Чуюн 
) , all over the world, is a very rare surname. The cognomen Чуюн is habitual in Kazakhstan, where it is a very rare surname, and Ukraine. Very seldom, Чуюн is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Чуюн | Kazakhstan, Ukraine, Russia |