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Surname Dũng (Dung , Dũng , ズン ) , throughout the world, is a widespread last name. The cognomen Dũng is habitual in Vietnam, where it is a common surname, Macao, where it is quite a common surname, and Malaysia. In absolute terms, it is commonest in South-eastern Asia, particularly Vietnam, Malaysia, and Indonesia. Likewise, Dũng is the forename as well as the last name.