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Surname Hiu (Hiu , สวัสดี , هيو ) , throughout the world, is a common last name. The surname Hiu is characteristic of Thailand, where it is quite a common surname, Hong Kong, where it is quite a rare surname, and Malaysia. In absolute terms, it most frequently occurs in South-eastern Asia, particularly Thailand, Indonesia, and Malaysia. Also, Hiu is the forename as well as the last name.