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Worldwide, Oyama (小山 , オヤマ , Oyama ) is a common mostly masculine, but uncommonly female given name. The first name Oyama is habitual in Nigeria, where it is quite a rare gender-neutral name, China, where it is quite a rare primarily male, but very infrequently feminine name, and South Africa, where it is a rare unisex name. Much less frequently, Oyama is the last name as well as the forename.
Oyama is also a name for the fictitious and mythical characters: .