Surname Вільчек (Wilczek 
, Вільчек 
) , in the entire world, is quite a common cognomen. The surname Вільчек is habitual in Poland, where it is quite a common surname, Malta, where it is quite a rare surname, and Germany. Not in comparison with a country's population, it most frequently occurs in Poland, Germany, and the United States. Also, Вільчек is the forename as well as the last name.