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Cognomen Kajiyama (Kajiyama ) , in the entire world, is a rare surname. The last name Kajiyama is habitual in Japan, where it is a rare surname, Brazil, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, it is the most numerous in Brazil, Japan, and the United States. Also, Kajiyama is the forename as well as the last name.