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Surname Choun (Choun , ชุน , Шун ) , across the world, is quite a rare cognomen. The cognomen Choun is characteristic of Guadeloupe, where it is quite a common surname, Malaysia, where it is quite a rare surname, and South Korea. In absolute terms, it is commonest in South Korea, Malaysia, and the United States. Also, Choun is the forename as well as the last name.