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Last name Tuah (Tuah , ハン , 항 ) , globally, is quite a common cognomen. The last name Tuah is characteristic of Brunei, where it is quite a common surname, Malaysia, and Liberia, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Malaysia, Indonesia, and Ghana. Likewise, Tuah is the forename as well as the last name.