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Cognomen Τάσιος (Tasios , Tassios , Τάσιος) , across the world, is quite a rare family name. The last name Τάσιος is habitual in Greece, where it is quite a common surname, Bulgaria, where it is a rare surname, and Australia. Measured by absolute frequency, it most frequently occurs in Greece, the United States, and Germany. Very seldom, Τάσιος is the forename as well as the last name.