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Family name Rial (Rial
, ريال
, リアル
) , across the world, is a common surname. The family name Rial is habitual in Uruguay, where it is quite a common surname, Argentina, where it is quite a rare surname, and Algeria. In absolute terms, it is the most numerous in Argentina, Algeria, and Spain. Very seldom, Rial is the forename as well as the last name.