Family name Кияш (Кияш 
, Kiyash 
) , worldwide, is a very rare surname. The cognomen Кияш is characteristic of Russia, where it is a very rare surname, Ukraine, and Italy. More prevalently, Кияш is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Кияш | Kazakhstan, Russia, Ukraine |
| Kiyash | Kazakhstan, Russia, Italy, Spain, India |