Surname Demidyuk (Демидюк 
, Demidyuk 
) , in the world, is quite a rare cognomen. The family name Demidyuk is habitual in Aland Islands, where it is quite a common surname, Belarus, where it is quite a rare surname, and Ukraine. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Демидюк | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Demidyuk | Aland Islands, Russia, Belarus, Ukraine, United States |
|
demidyuk mikhail fedorovich politician (b. 1879) |
|
| ilya v. demidyuk researcher |
|