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Surname Nishinaka (西中 , Nishinaka ) , in the entire world, is a rare cognomen. The cognomen Nishinaka is habitual in Japan, where it is a very rare surname, Canada, and the United States. Not in comparison with a country's population, this name is the most popular in China, Japan, and the United States. More prevalently, Nishinaka is the forename as well as the last name.