Worldwide, كاو (Cao 
, Kau , Kao ) is a common unisex first name. The forename كاو is habitual in Macao, where it is quite a common epicene name, Hong Kong, where it is quite a rare dominantly boy's, but seldom female name, and Vietnam, where it is quite a rare unisex name. In absolute terms, it most frequently occurs in Vietnam, China, and India. Much more prevalently, كاو is the last name as well as the forename.
كاو is also a name for the fictitious and mythical characters: Kao Akebi , the fictional character from Akebi's Sailor Uniform and Kao K’o-Kung , the The Cat Who, The Cat Who....