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Globally, Oshima (オオシマ , ヒロミ , Oshima ) is a rare unisex forename. The given name Oshima is habitual in Japan, where it is a rare gender-neutral name, China, where it is a very rare masculine name, and Nigeria, where it is a very rare gender-neutral name. Not in comparison with a country's population, it most frequently occurs in China, Japan, and India. More prevalently, Oshima is the last name as well as the forename.