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Surname Hasek (Hasek
) , in the entire world, is quite a rare last name. The cognomen Hasek is habitual in Eastern Europe, particularly Czechia, where it is quite a common surname, Slovakia, where it is a rare surname, and Poland. Measured by absolute frequency, it is commonest in Czechia, the United States, and Germany. Much less frequently, Hasek is the forename as well as the last name.