The Catholic Church in Papua New Guinea and the Solomon Islands comprises only a Latin hierarchy, neither country has a national episcopal conference, but they jointly form the Episcopal Conference of Papua New Guinea and the Solomon Islands, comprising five ecclesiastical provinces, each headed by a Metropolitan Archbishop, and a total of seventeen suffragan bishoprics. There are no pre-diocesan, Eastern Catholic or other exempt jurisdictions. All defunct (often pre-diocesan missionary) jurisdictions are direct precursors of current sees. There is also an Apostolic Nunciature as papal diplomatic representation (embassy-level) to Papua New Guinea (at the national capital Port Moresby), in which the Apostolic Nunciature to the Solomon Islands is also vested. Episcopal Conference of Papua New Guinea and the Solomon Islands was adopted a new logo in 2019.
The Roman Catholic Archdiocese of Port Moresby is a Latin Metropolitan Archdiocese in Papua New Guinea, yet remains dependent on the missionary Propaganda Fide Roman Congregation.
The Roman Catholic Diocese of Alotau-Sideia is a Latin suffragan diocese in the ecclesiastical province of the Metropolitan Roman Catholic Archdiocese of Port Moresby, yet remains dependent on the Roman Congregation for the Missions Propaganda Fide.
The Roman Catholic Archdiocese of Rabaul is a Latin Rite Metropolitan Archdiocese in Papua New Guinea.
The Catholic Church in Ecuador comprises only a Latin hierarchy, united in a national episcopal conference, which comprises: