Family name Miščančuk (Мищанчук 
, Miščančuk 
, Мишчанчук ) , around the world, is a rare last name. The last name Miščančuk is characteristic of Croatia, where it is quite a rare surname, Belarus, where it is a rare surname, and Kazakhstan. Not in comparison with a country's population, the name is most common in Russia, Croatia, and Belarus.