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Last name Chamun (Chamun ) , around the world, is a rare surname. The cognomen Chamun is habitual in Mauritius, where it is quite a rare surname, Sweden, where it is a rare surname, and Nigeria, where it is a very rare surname. In absolute terms, the name is most common in Nigeria, Brazil, and Mauritius. Likewise, Chamun is the forename as well as the last name.