The Roman Catholic Diocese of Oyem () is a diocese located in the city of Oyem in the Ecclesiastical province of Libreville in Gabon. History 29 May 1969: Established as Diocese of Oyem from the Metropolitan Archdiocese of Libreville 19 March 2003: Lost territory to the erection of the Apostolic Prefecture of Makokou. Bishops of Oyem François Ndong (29 May 1969 – 23 August 1982) Basile Mvé Engone, S.D.B. (23 August 1982 – 3 April 1998), appointed archbishop of Libreville Jean-Vincent Ondo Eyene (18 March 2000 – present) Coadjutor Bishops Basile Mvé Engone, S.D.B. (1980-1982) See also Roman Catholicism in Gabon References External links GCatholic.org Catholic Hierarchy Roman Catholic dioceses in Gabon Christian organizations established in 1969 Roman Catholic dioceses and prelatures established in the 20th century Roman Catholic Ecclesiastical Province of Libreville