Family name Šun (Шун 
, Šun 
) , globally, is an extremely rare cognomen. The cognomen Šun is habitual in Kazakhstan, where it is a very rare surname, Russia, where it is an extremely rare surname, and Ukraine. More frequently, Šun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Шун | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Šun | Myanmar |