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Last name ナオヤ (Naoya , ナオヤ ) , all around the world, is a common surname. The cognomen ナオヤ is characteristic of Japan, where it is quite a common surname, Taiwan, where it is a rare surname, and Malaysia, where it is a very rare surname. In absolute terms, this name is the most popular in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, ナオヤ is the forename as well as the last name.