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In all the world, קאו (Kao , Cão , קאו ) is quite a rare gender-neutral given name. The forename קאו is characteristic of Macao, where it is quite a rare boy's name, Taiwan, where it is quite a rare gender-neutral name, and Botswana, where it is quite a rare male name. In absolute terms, it is the most numerous in Taiwan, Ethiopia, and China. More prevalently, קאו is the last name as well as the forename.
קאו 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....