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Family name Kieu (Kieu , Киеу ) , in the world, is a common surname. The cognomen Kieu is characteristic of Macao, where it is quite a common surname, Vietnam, where it is quite a rare surname, and Malaysia. Not in comparison with a country's population, it is the most numerous in Vietnam, Malaysia, and the United States. Also, Kieu is the forename as well as the last name.