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Last name Polgar (Polgár , Polgar , Полгар ) , throughout the world, is quite a common family name. The surname Polgar is habitual in Hungary, where it is quite a common surname, Croatia, where it is quite a rare surname, and Slovakia. Not in comparison with a country's population, it is the most numerous in Hungary, Romania, and the United States. Much less frequently, Polgar is the forename as well as the last name.