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Cognomen Куприян (Куприян , Kupriyan , Kuprijan) , all around the world, is a rare surname. The cognomen Куприян is habitual in Belarus, where it is quite a rare surname, Russia, where it is a rare surname, and Kazakhstan, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Russia, Belarus, and Ukraine. Much less frequently, Куприян is the forename as well as the last name.