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Cognomen Mraz (Мраз , Mraz , مراز ) , across the world, is a common surname. The family name Mraz is habitual in Slovakia, where it is quite a common surname, Czechia, and Armenia (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Slovakia, Czechia, and the United States. Very seldom, Mraz is the forename as well as the last name.