Cognomen Kondratiouk (Кондратюк 
, Kondratiouk 
) , in all the world, is a common surname. The last name Kondratiouk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, and Russia, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Кондратюк | Russia, Belarus, Kazakhstan, Ukraine, Poland |
| Kondratiouk | Canada, United States |
Кондратиоук, Кондратйук, and Кондратьюк