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In the world, Kieu (Kieu , Киеу ) is quite a rare unisex first name. The given name Kieu is habitual in Macao, where it is quite a common female name, Vietnam, where it is quite a rare gender-neutral name, and Australia, where it is a rare largely female, but infrequently male name. Not in comparison with a country's population, it is the most numerous in Vietnam, the United States, and Australia. Likewise, Kieu is the last name as well as the forename.