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Cognomen Билек (Bilek , Bílek , Билек ) , in the entire world, is a common surname. The family name Билек is characteristic of Czechia, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Austria. Measured by absolute frequency, the name is most common in Czechia, the United States, and Germany. Much less frequently, Билек is the forename as well as the last name.