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Cognomen アオ (Ao , アオ ) , around the globe, is a widespread surname. The family name アオ is habitual in Macao, where it is a widespread surname, Mozambique, where it is quite a common surname, and China, where it is quite a rare surname. In absolute terms, it most frequently occurs in China, India, and Macao. Very seldom, アオ is the forename as well as the last name.