Surname Kuchiyash (Kuchiyash 
, Кучияш 
) , across the world, is a very rare last name. The last name Kuchiyash is habitual in Eastern Europe, particularly Belarus, where it is a very rare surname, Ukraine, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kuchiyash | Russia, United States |
| Кучияш | Kazakhstan, Russia, Ukraine, Belarus |