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Cognomen Adeleye (Adeleye , Аделейе , אדליי ) , all over the world, is a common last name. The cognomen Adeleye is characteristic of Nigeria, where it is quite a common surname, Niger, where it is quite a rare surname, and Ireland. In absolute terms, the name is most common in Nigeria, Niger, and the United States. Also, Adeleye is the forename as well as the last name.