Surname Proskurniak (Проскурняк 
, Proskurniak 
) , across the world, is a rare last name. The family name Proskurniak is habitual in Ukraine, where it is quite a rare surname, Belarus, where it is a very rare surname, and Canada. Not in comparison with a country's population, the name is most common in Ukraine, Canada, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Проскурняк | Kazakhstan, Ukraine, Belarus, Russia |
| Proskurniak | Canada, United States |