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Cognomen Ханган (Hangan , Khangan , Ханган ) , worldwide, is quite a rare family name. The surname Ханган is habitual in Romania, where it is quite a rare surname, Moldova, and Australia, where it is a rare surname. In absolute terms, it is commonest in Romania, India, and Moldova. Much less frequently, Ханган is the forename as well as the last name.