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Cognomen Woon (Woon , 伍恩 , Вун ) , around the world, is a common last name. The cognomen Woon is habitual in Malaysia, where it is quite a common surname, Singapore, and Jersey (explore the name in all countries). In absolute terms, the name is most common in South-eastern Asia, particularly Malaysia, Myanmar, and Singapore. Much less frequently, Woon is the forename as well as the last name.