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Last name Тиу (Tiu , Tyu , Tiou ) , around the globe, is a common cognomen. The family name Тиу is characteristic of Guatemala, where it is quite a common surname, Philippines, and Malaysia, where it is quite a rare surname. In absolute terms, it is commonest in Philippines, India, and Guatemala. Much less frequently, Тиу is the forename as well as the last name.