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Cognomen Altunay (Altunay , Алтунай ) , throughout the world, is quite a common family name. The cognomen Altunay is habitual in Turkey, where it is quite a common surname, Austria, where it is a rare surname, and Denmark. Measured by absolute frequency, it most frequently occurs in Turkey, Germany, and Austria. Very seldom, Altunay is the forename as well as the last name.