Across the world, Киеу (Kieu 
, Kyeu 
, Киеу 
) is quite a rare unisex first name. The given name Киеу is habitual in Macao, where it is quite a common girly name, Vietnam, where it is quite a rare epicene name, and Australia, where it is a rare dominantly female, but seldom masculine name. In absolute terms, the name is most common in Vietnam, the United States, and Australia. Likewise, Киеу is the last name as well as the forename.