Cognomen Gritsiouk (Грицюк 
, Gritsiouk 
) , in all the world, is a common family name. The cognomen Gritsiouk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia. In absolute terms, it most frequently occurs in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Грицюк | Kazakhstan, Belarus, Ukraine, Azerbaijan, Russia |
| Gritsiouk | United States, Canada |