Surname Greshchuk (Грещук 
, Greshchuk 
) , in the entire world, is quite a rare last name. The surname Greshchuk is characteristic of Ukraine, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Belarus, where it is a very rare surname. Measured by absolute frequency, the name is most common in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Грещук | Kazakhstan, Ukraine, Russia, Belarus |
| Greshchuk | United States, Russia |