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Surname Matsubara (マツバラ , 松原 , Matsubara ) , all over the world, is quite a rare last name. The cognomen Matsubara is characteristic of Japan, where it is a rare surname, Brazil, and Singapore. Not in comparison with a country's population, it most frequently occurs in Brazil, Japan, and the United States. More prevalently, Matsubara is the forename as well as the last name.