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Cognomen ムラヤマ (ムラヤマ , Murayama
) , in all the world, is quite a rare family name. The cognomen ムラヤマ is habitual in Paraguay, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Japan. Not in comparison with a country's population, it is commonest in Japan, Brazil, and the United States. More prevalently, ムラヤマ is the forename as well as the last name.