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Last name Polgár (Polgár , Polgar , 朱迪 ) , in the entire world, is quite a common family name. The surname Polgár is habitual in Hungary, where it is quite a common surname, Croatia, where it is quite a rare surname, and Slovakia. In absolute terms, it is the most numerous in Hungary, Romania, and the United States. Much less frequently, Polgár is the forename as well as the last name.