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Cognomen Chioma (Chioma , Чиома , チオマ) , worldwide, is a widespread surname. The last name Chioma is habitual in Nigeria, where it is quite a common surname, Iceland, where it is quite a rare surname, and Niger. In absolute terms, the name is most common in Sub-Saharan Africa, particularly Nigeria, Niger, and Cameroon. Likewise, Chioma is the forename as well as the last name.