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Surname Matsukawa (マツカワ , 松川 , Matsukawa ) , across the world, is quite a rare last name. The surname Matsukawa is habitual in Hong Kong, where it is a rare surname, Slovakia, and Japan. Measured by absolute frequency, it most frequently occurs in China, Japan, and the United States. More frequently, Matsukawa is the forename as well as the last name.