Ordained Bishop | Years | Name | Current Title |
| Most Senior |
| 6 Oct 1985 |
| Antonio Maria Cardinal Vegliò | President Emeritus of the Dicastery for Promoting Integral Human Development, Roman Curia |
| 10 May 1992 |
| Bishop Cesare Bonivento, P.I.M.E. | Bishop Emeritus of Vanimo |
| 23 Apr 1995 |
| Bishop Gilles Côté, S.M.M. | Bishop Emeritus of Daru-Kiunga |
| 7 May 1995 |
| Archbishop Stephen Joseph Reichert, O.F.M. Cap. | Archbishop Emeritus of Madang |
| 27 Apr 1996 |
| Bishop Francesco Sarego, S.V.D. | Bishop Emeritus of Goroka |
| 2 Jul 2000 |
| Archbishop Douglas William Young, S.V.D. | Archbishop Emeritus of Mount Hagen |
| 24 Aug 2000 |
| Bishop Johannes Henricus J. Te Maarssen, S.V.D. | Bishop Emeritus of Kundiawa |
| 11 Feb 2001 |
| John Cardinal Ribat, M.S.C. | Archbishop of Port Moresby |
| 8 Sep 2001 |
| Archbishop Francesco Panfilo, S.D.B. | Archbishop Emeritus of Rabaul |
| 6 Jan 2002 |
| Archbishop Adolfo Tito Camacho Yllana | Apostolic Nuncio to Israel |
| 29 Sep 2005 |
| Archbishop Rochus Josef Tatamai, M.S.C. | Archbishop of Rabaul |
| 23 May 2006 |
| Archbishop Francisco Montecillo Padilla | Apostolic Nuncio to Guatemala |
| Most Junior |
| 27 Sep 2025 |
| Bishop Jacek Piotr Tendej, C.M. | Bishop of Alotau-Sideia |
| 22 Feb 2025 |
| Archbishop Maurizio Claudio Bravi | Apostolic Nuncio to Papua New Guinea |
| 3 Aug 2024 |
| Archbishop Clement Papa | Archbishop of Mount Hagen |
| 11 May 2024 |
| Archbishop Mauro Lalli | Apostolic Nuncio |
| 15 Aug 2023 |
| Bishop Roland Vunuvung | Bishop of Kavieng |
| 7 May 2022 |
| Bishop Walenty Gryk, S.V.D. | Bishop of Goroka |
| 26 Sep 2021 |
| Bishop Siby Mathew Peedikayil, H.G.N. | Bishop of Aitape |
| 2 Sep 2021 |
| Bishop Justin Ain Soongie | Bishop of Wabag |
| 29 Aug 2021 |
| Bishop Joseph Tarife Durero, S.V.D. | Bishop of Daru-Kiunga |
| 3 Jul 2021 |
| Bishop Paul Sundu | Bishop of Kundiawa |
| 19 Jun 2021 |
| Archbishop Fermín Emilio Sosa Rodríguez | Apostolic Nuncio to Bolivia |
| 25 Jan 2020 |
| Bishop John Bosco Auram | Bishop of Kimbe |