Dr Sebastian Okechukwu Mezu // ⓘ (born April 30, 1941) is a Nigerian writer, scholar, philanthropist, and publisher.

[1] Sebastian Okechukwu Mezu was born on April 30, 1941, in Ezeogba, Emekuku, Owerri, Imo State.

[2] When the Biafran war broke out in 1967, due to the recognition of his valuable contributions and activism as a young scholar in the United States, where he had voluntarily translated volumes of documents for his country into French and other languages, Mezu was appointed Biafran Government Special Representative and Ambassador to Abidjan, Ivory Coast, at the age of 27 by Colonel C. Odumegwu Ojukwu and was charged with affairs in Francophone and Anglophone West Africa.

In 1969 Mezu established Black Academy Press, Inc, in Buffalo, New York,[4] one of the first black-owned academic publishing companies that set the tone for Africana studies in the 1960s in the US.

He was Campaign Director, Party Secretary and principal architect of the NPP, which won a landslide victory (over 80%) in the Imo State Legislative, Gubernatorial and Presidential Elections in Nigeria in 1979.