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Surname Bial (Bial , 比亚 , بيال ) , across the world, is quite a rare last name. The surname Bial is habitual in Slovakia, where it is quite a rare surname, Hungary, and Lithuania, where it is a rare surname. In absolute terms, this name is the most popular in France, the United States, and Algeria. Also, Bial is the forename as well as the last name.