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Surname Tuen (Tuen , ตืน , Туен ) , in the world, is quite a rare last name. The surname Tuen is characteristic of British Virgin Islands, where it is quite a common surname, Hong Kong, where it is quite a rare surname, and Norway. Not in comparison with a country's population, it is the most numerous in Hong Kong, Malaysia, and China. Likewise, Tuen is the forename as well as the last name.