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Last name Adu (Adu , Аду , אדו ) , around the world, is a common family name. The last name Adu is habitual in Ghana, where it is a common surname, Nigeria, where it is quite a common surname, and Qatar, where it is quite a rare surname. In absolute terms, the name is most common in Ghana, Nigeria, and Indonesia. Also, Adu is the forename as well as the last name.