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Family name 潮 (Chao , 潮 , Ushio ) , across the world, is a widespread last name. The last name 潮 is habitual in Macao, where it is a widespread surname, Cayman Islands, where it is quite a common surname, and Taiwan (explore the name in all countries). In absolute terms, it is commonest in China, Taiwan, and the United States. Also, 潮 is the forename as well as the last name.