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Cognomen Toshihiko (Toshihiko , トシヒコ , Тошихико ) , in all the world, is a common family name. The last name Toshihiko is characteristic of Japan, where it is quite a common surname, Taiwan, where it is a rare surname, and Poland, where it is a very rare surname. In absolute terms, the name is most common in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, Toshihiko is the forename as well as the last name.