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Cognomen うしお (Ushio , うしお) , worldwide, is a rare last name. The family name うしお is characteristic of Japan, where it is a rare surname, New Zealand, where it is a very rare surname, and the United States. Not in comparison with a country's population, this name is the most popular in Japan, the United States, and China. More frequently, うしお is the forename as well as the last name.