Family name Stelmaschuk (Стельмащук 
, Stelmaschuk 
) , in the entire world, is quite a rare surname. The last name Stelmaschuk is characteristic of Ukraine, where it is quite a rare surname, Canada, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Стельмащук | Kazakhstan, Russia, Georgia, Ukraine |
| Stelmaschuk | Canada, Argentina, United States, Brazil, New Zealand |
Stelmashchuk, Стелмасчук, and Стелмащук