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Cognomen Emeka (Emeka , Емека , エメカ) , all around the world, is a widespread last name. The last name Emeka is characteristic of Nigeria, where it is quite a common surname, Equatorial Guinea, where it is quite a rare surname, and Iceland. In absolute terms, the name is most common in Sub-Saharan Africa, particularly Nigeria, the Democratic Republic of the Congo, and Cameroon. Also, Emeka is the forename as well as the last name.