The Diocese of Farafangana is a Roman Catholic Diocese under the Archdiocese of Fianarantsoa in Madagascar. It is based in the town of Farafangana and was erected on 8 April 1957. It performs the Latin Rite. The Diocese covers approximately 20,390 km (12,670 mi). As of 2004, the diocese population was about 900,000, with 7.9% Catholic. 36 priests were in the Diocese for a ratio of 1,985 Catholics for every 1 Priest. The current bishop of the Diocese is Gaetano Di Pietro, SCI since Benjamin Marc Ramaroson, CM became archbishop of Antsiranana.

• Camille-Antoine Chilouet, C.M. (24 Dec 1957 - 25 Nov 1970)
• Victor Razafimahatratra, S.J. (16 Jan 1971 - 10 Apr 1976), appointed Archbishop of Tananarive (Cardinal in 1976)
• Charles-Remy Rakotonirina, S.J. (28 Oct 1976 - 6 Aug 2005)
• Benjamin Marc Balthason Ramaroson, C.M. (26 Nov 2005 - 27 Nov 2013), appointed Archbishop of Antsiranana
• Gaetano Di Pierro, S.C.I. (3 Mar 2018 - )

• Catholic Church in Madagascar

• Profile of Farafangana Diocese

22°49′16″S 47°49′59″E / 22.8210°S 47.8331°E / -22.8210; 47.8331