Roman Catholic Archdiocese of Antsiranana

Although it has its ecclesiastical province, it remains subject to the missionary Roman Congregation for the Evangelization of Peoples.

On 15 March 1923 it lost territory to establish the then Apostolic Vicariate of Majunga On 14 September 1955 it was promoted as Diocese of Diégo-Suarez Promoted on 11 December 1958 as Metropolitan Archdiocese of Diégo-Suarez, during the transition from French colony to independence.

It enjoyed a Papal visit by Pope John Paul II in April 1989.

On 30 October 2000 it lost further territory to establish the Diocese of Fenoarivo Atsinanana.

The Metropolitan Archdiocese of Antsiranana has the following suffragan sees : As per 2014, it pastorally served 662,873 Catholics (42.1% of 1,573,833 total) on 37,924 km2 in 26 parishes with 65 priests (51 diocesan, 14 religious), 194 lay religious (42 brothers, 152 sisters) and 54 seminarians.