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Surname Nishiyama (ニシヤマ , 西山 , Nishiyama ) , all over the world, is quite a rare family name. The surname Nishiyama is habitual in Marshall Islands, where it is quite a common surname, Japan, where it is a rare surname, and Brazil. Not in comparison with a country's population, it most frequently occurs in Brazil, Japan, and China. More frequently, Nishiyama is the forename as well as the last name.