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Surname Tanigawa (タニガワ , Tanigawa , Танигава) , around the world, is a rare family name. The cognomen Tanigawa is characteristic of Japan, where it is a rare surname, Sweden, and Brazil. Not in comparison with a country's population, it is commonest in the United States, Japan, and Brazil. More frequently, Tanigawa is the forename as well as the last name.