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Across the world, オカ (Oka , オカ ) is a common unisex first name. The first name オカ is habitual in Indonesia, where it is quite a rare largely masculine, but uncommonly female name, Egypt, where it is quite a rare gender-neutral name, and Nigeria. Also, オカ is the last name as well as the forename.
オカ is also a name for the fictitious and mythical characters: .