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Cognomen ヨシオ (Yoshio , ヨシオ , Yosio ) , around the world, is a common surname. The family name ヨシオ is characteristic of Japan, where it is quite a common surname, Mexico, where it is quite a rare surname, and Taiwan. Not in comparison with a country's population, it is the most numerous in Japan, Mexico, and China. Very seldom, ヨシオ is the forename as well as the last name.