Erected on February 17, 1971, as a territorial prelature out of the newly elevated Diocese of Ozamis, it was subdivided on November 20, 1976, to form the new
Territorial Prelature of Marawi. On November 15, 1982, the prelature nullius was elevated to a full diocese and a suffragan to the
Archdiocese of Cagayan de Oro and then later to the
Archdiocese of Ozamis after the latter's elevation to archdiocese on January 24, 1983. The current bishop is Jose Rapadas III, appointed in 2019. Bishop Rapadas was a diocesan clergyman from the
Diocese of Ipil in the province of
Zamboanga Sibugay. He is the fifth bishop of the Diocese. ==Ordinaries==