Surname Grygorchuk (Григорчук 
, Grygorchuk 
) , around the world, is quite a common family name. The surname Grygorchuk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Григорчук | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Grygorchuk | Romania, Italy, Spain, Poland, Ukraine |