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Globally, Onyema (Onyema ) is a common epicene first name. The first name Onyema is characteristic of Nigeria, where it is quite a common gender-neutral name, South Korea, where it is a rare masculine name, and the United Kingdom, where it is a very rare unisex name. In absolute terms, it most frequently occurs in Nigeria, South Korea, and the United States. Likewise, Onyema is the last name as well as the forename.