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Cognomen Григас (Grygas , Grigas , Григас ) , in the world, is quite a rare surname. The cognomen Григас is habitual in Lithuania, where it is quite a common surname, Estonia, where it is a rare surname, and Uruguay. In absolute terms, it most frequently occurs in Lithuania, the United States, and Germany. Much less frequently, Григас is the forename as well as the last name.