Sebastian Okechukwu Mezu (an haife shi a Afrilu 30, 1941) marubuci ne, masani, mai ba da agaji, kuma mai wallafawa. Ya tsunduma cikin harkokin siyasa a Najeriya a karshen shekarun 1970s An haifi Sebastian Okechukwu Mezu a ranar 30 ga Afrilu, 1941, a Ezeogba, Emekuku, Owerri, jihar Imo. Ya sami B.A. a Faransanci (1964) tare da ƙananan yara a Jamusanci da Falsafa daga Jami'ar Georgetown. Ya sami LL.B. a 1966 daga La Salle Extension University, Chicago, da MA (1966), Ph.D (1967) a cikin Harsunan Soyayya daga Jami'ar Johns Hopkins, Baltimore, Maryland. A cikin shekarun 1970s, Mezu ya kafa reshen jihar Imo na jam'iyyar Peoples Democratic Party (NPP) kuma a matsayin Sakatare na NPP ya girka kuma ya taimaka wajen zaben gwamna Samuel Onunaka Sam Mbakwe da wasu sanannun sunaye. Bayan nasarar NPP a zaben, Mezu ya zama Shugaban Kamfanin Golden Breweries Limited (1979-80), ya gyara da kuma inganta kamfanin giyar yayin fadada dala miliyan 50; kuma a matsayinsa na shugaban Kamfanin Jaridu na Jihar Imo Ltd inda ya rika yadawa kullum daga cikin Ba’amurken daga Nijeriya zuwa dubu 50 zuwa 150,000.