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Cognomen Ханьян (Hanian , Ханьян , Khanian ) , across the world, is a rare surname. The surname Ханьян is characteristic of Estonia, where it is a rare surname, Armenia, and Iran. Not in comparison with a country's population, this name is the most popular in Iran, the United States, and Russia. Much less frequently, Ханьян is the forename as well as the last name.