The Roman Catholic Diocese of Bereina is a suffragan diocese of the Roman Catholic Archdiocese of Port Moresby. It was erected Vicariate Apostolic in 1959 and elevated to a diocese in 1966.
Bishops
Ordinaries
Eugène Klein, M.S.C. (1960–1971), appointed Coadjutor Archbishop of Nouméa, New Caledonia Louis Vangeke, M.S.C. (1976–1979) Benedict To Varpin (1979–1987), appointed Coadjutor Archbishop of Madang Luke Paul Matlatarea, M.S.C. (1988–1998) Gérard-Joseph Deschamps, S.M.M. (1999–2002) John Ribat, M.S.C. (2002–2007), appointed Coadjutor Archbishop of Port Moresby; future Cardinal Rochus Tatamai, M.S.C. (2007–2018), appointed Bishop of Kavieng Otto Separy (2019–present)
Auxiliary bishop
John Ribat, M.S.C. (2000–2002), appointed Bishop here; future Cardinal
Coat of arms
The new coat of arms of the Diocese was adopted in 2016. The proposal of coat of arms created Marek Sobola, a heraldic artist from Slovakia.