Around the world, Ouaï (Oai 
, Ouaï, Uaio) is a rare primarily boy's, but scarcely girly forename. The given name Ouaï is habitual in Vietnam, where it is a rare male name, the United States, where it is a very rare principally male, but scarcely feminine name, and China, where it is an extremely rare masculine name. Also, Ouaï is the last name as well as the forename.