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Cognomen ミチオ (Michio , ミチオ , Mitio ) , all around the world, is a common surname. The family name ミチオ is habitual in Japan, where it is quite a rare surname, Papua New Guinea, and Taiwan, where it is a rare surname. In absolute terms, this name is the most popular in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, ミチオ is the forename as well as the last name.