Family name Katsiuk (Katsiuk 
, Кацюк 
) , in the entire world, is a rare last name. The surname Katsiuk is characteristic of Ukraine, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Katsiuk | Canada |
| Кацюк | Kazakhstan, Ukraine, Russia |