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Family name Demianczuk (Demianczuk
) , in all the world, is a rare surname. The cognomen Demianczuk is habitual in Poland, where it is a rare surname, Israel, and Ireland. Not in comparison with a country's population, it is commonest in Poland, Argentina, and Brazil. More frequently, Demianczuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demianczuk | Argentina, United States, Poland, Germany, Brazil |
Demiañczuk, and Demiańczuk