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Cognomen トモヨ (Tomoyo , トモヨ ) , globally, is a common surname. The family name トモヨ is characteristic of Japan, where it is quite a common surname, Vietnam, where it is a very rare surname, and Indonesia. In absolute terms, it is the most numerous in Japan, China, and Indonesia. Much less frequently, トモヨ is the forename as well as the last name.