Roman Catholic Diocese of Alotau-Sideia

History

• It was erected as the Prefecture Apostolic of Samarai on 13 June 1946, on territory split off from the then Apostolic Vicariate of Papua.
• Promoted on 11 November 1956 as Vicariate Apostolic of Samarai, hence entitled to a titular bishop.
• Promoted on 15 November 1966 as Diocese of Sideia, ceasing to be an exempt pre-diocesan mission.
• Its name was changed to the Diocese of Alotau-Sideia on 28 April 1975.

  Coat of arms

Ordinaries

• Apostolic Administrator André Sorin, Sacred Heart Missionaries , Titular Bishop of Antiphræ, while Apostolic Vicar of Port Moresby
• Francis John Doyle, M.S.C.

• Desmond Charles Moore, M.S.C.
• Francesco Panfilo, Salesians , also President of Bishops’ Conference of Papua New Guinea and Soloman Islands ; later Coadjutor Archbishop of Rabaul
• Roland Santos, Lazarists