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Last name Yamanaka (ヤマナカ , Yamanaka , 山中 ) , in all the world, is quite a common family name. The surname Yamanaka is characteristic of Eastern Asia, particularly Taiwan, where it is quite a rare surname, Japan, where it is a rare surname, and Hong Kong. Not in comparison with a country's population, the name is most common in Brazil, Japan, and the United States. More frequently, Yamanaka is the forename as well as the last name.