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Surname Nishizawa (ニシザワ , Nishizawa , Нисидзава) , in the entire world, is quite a rare last name. The surname Nishizawa is habitual in Singapore, where it is a rare surname, Bolivia, and Japan. Not in comparison with a country's population, it is the most numerous in Japan, Brazil, and Mexico. More frequently, Nishizawa is the forename as well as the last name.