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All around the world, 大山 (大山 , Oyama , Оояма) is a common mostly boy's, but infrequently feminine given name. The forename 大山 is characteristic of Nigeria, where it is quite a rare epicene name, South Africa, where it is a rare gender-neutral name, and China, where it is a rare principally masculine, but very seldom girly name. Also, 大山 is the last name as well as the forename.
大山 is also a name for the fictitious and mythical characters: .