| Date | Age | Event | Bishop | Title | Current Title |
| 1 Sep | 75.2 | Retired | Edward Francis | Bishop of Sivagangai, India | Bishop Emeritus |
| 59.9 | Succeeded | Jebalamai Susaimanickam | Bishop of Sivagangai, India |
| 2 Sep | 61.2 | Ordained Bishop | Camillo Ballin, M.C.C.I. | Titular Bishop of Arna | Vicar Apostolic of Kuwait |
| 75.4 | Retired | Silvio Padoin | Bishop of Pozzuoli, Italy | Bishop Emeritus |
| 57.4 | Succeeded | Gennaro Pascarella | Bishop of Pozzuoli, Italy |
| 4 Sep | 56.1 | Ordained Bishop | Bernardo Álvarez Afonso | Bishop of San Cristóbal de La Laguna o Tenerife, Spain |
| 61.0 | Installed | Bernard-Nicolas Jean-Marie Aubertin, O. Cist. | Archbishop of Tours, France |
| 49.0 | Ordained Bishop | Fidelis Rakotonarivo, S.J. | Bishop of Ambositra, Madagascar |
| 7 Sep | 64.0 | Died | José Miguel Ángel Giles Vázquez † | Bishop of Ciudad Altamirano, Guerrero, México |
| 8 Sep | 57.1 | Appointed | Maroun Elias Nimeh Lahham | Bishop of Tunis, Tunisia |
| 64.9 | Appointed | Fouad Twal | Coadjutor Archbishop of Gerusalemme {Jerusalem}, Palestine |
| 10 Sep | 45.0 | Ordained Bishop | Philippe Jean-Charles Jourdan | Titular Bishop of Pertusa | Apostolic Administrator of Estonia |
| 12 Sep | 75.9 | Appointed | Manuel Batakian, I.C.P.B. | Eparch of Our Lady of Nareg in New York (Armenian), USA |
| 13 Sep | 71.2 | Died | Paul Jean-Marie Dossavi † | Bishop of Aného, Togo |
| 54.7 | Appointed | Philip Tartaglia | Bishop of Paisley, Scotland, Great Britain |
| 15 Sep | 46.6 | Succeeded | Juan Maria Florindo Agurto Muñoz, O.S.M. | Bishop of San Carlos de Ancud, Chile |
| 42.9 | Ordained Bishop | Ricardo Ernesto Centellas Guzmán | Titular Bishop of Turres Ammeniae | Auxiliary Bishop of Potosí, Bolivia |
| 49.1 | Ordained Bishop | José Rojas Rojas, Jr. | Titular Bishop of Idassa | Auxiliary Bishop of Caceres (Nueva Caceres), Philippines |
| 75.4 | Retired | Juan Luis Ysern de Arce | Bishop of San Carlos de Ancud, Chile | Bishop Emeritus |
| 17 Sep | 47.2 | Ordained Bishop | Krzysztof Bialasik, S.V.D. | Bishop of Oruro, Bolivia |
| 49.3 | Ordained Bishop | Ramón Alfredo Dus | Titular Bishop of Thibica | Bishop of Reconquista, Argentina |
| 18 Sep | 75.4 | Retired | Joseph Dergham | Bishop of Le Caire {Cairo} (Maronite), Egypt | Bishop Emeritus |
| 65.3 | Installed | Ludwig Schwarz, S.D.B. | Bishop of Linz, Austria |
| 19 Sep | 65.8 | Appointed | Jean-Louis Giasson, P.M.E. | Bishop of Yoro, Honduras |
| 63.1 | Appointed | Jorge Liberato Urosa Savino | Cardinal, Archbishop of Caracas, Santiago de Venezuela |
| 20 Sep | 53.6 | Appointed | George Antonysamy | Apostolic Nuncio to Sierra Leone | Apostolic Nuncio to Guinea |
| 65.0 | Ordained Bishop | Rutilio Del Riego Jáñez | Titular Bishop of Daimlaig | Auxiliary Bishop of San Bernardino, California, USA |
| 21 Sep | 74.2 | Resigned | Paulo Eduardo Andrade Ponte | Archbishop of São Luís do Maranhão, Maranho, Brazil | Archbishop Emeritus |
| 53.6 | Ordained Bishop | George Antonysamy | Titular Archbishop of Sulci | Apostolic Nuncio to Guinea |
| 59.6 | Appointed | Ottorino Assolari, C.S.F. | Bishop of Serrinha, Baia, Brazil |
| 60.1 | Appointed | José Belisário da Silva, O.F.M. | Archbishop of São Luís do Maranhão, Maranho, Brazil |
| 54.9 | Appointed | Jacinto Agcaoili Jose | Bishop of Urdaneta, Philippines |
| 24 Sep | 68.7 | Appointed | Simon Atallah, O.A.M. | Bishop of Baalbek-Deir El-Ahmar (Maronite), Lebanon |
| 61.7 | Appointed | Georges Bou-Jaoudé (Aboujaoudé), C.M. | Archbishop of Tripoli del Libano {Tarabulus} (Maronite), Lebanon |
| 62.2 | Appointed | François Eid, O.M.M. | Bishop of Le Caire {Cairo} (Maronite), Egypt |
| 44.9 | Appointed | Elias Nassar | Bishop of Saïda (Maronite), Lebanon |
| 58.2 | Appointed | Juan Antonio Reig Pla | Bishop of Cartagena (en España) |
| 28 Sep | 76.7 | Retired | Manuel Mireles Vaquera | Prelate of El Salto, Durango, México | Prelate Emeritus |
| 51.9 | Appointed | Ruy Rendón Leal | Prelate of El Salto, Durango, México |
| 64.8 | Ordained Bishop | Albert Vanbuel, S.D.B. | Bishop of Kaga-Bandoro, Central African Republic |
| 29 Sep | 55.2 | Ordained Bishop | John Ifeanyichukwu Okoye | Bishop of Awgu, Nigeria |
| 82.0 | Died | Gennaro Maria Prata Vuolo, S.D.B. † | Archbishop Emeritus of Cochabamba, Bolivia |
| 43.0 | Ordained Bishop | Rochus Josef Tatamai, M.S.C. | Titular Bishop of Accia | Bishop of Bereina, Papua New Guinea |
| 30 Sep | 59.3 | Ordained Bishop | Michael August Blume, S.V.D. | Titular Archbishop of Alexanum | Apostolic Nuncio to Benin |
| 76.5 | Retired | Michael Vincent Paschal Rowland, O.F.M. | Bishop of Dundee, South Africa | Bishop Emeritus |
| 1 Oct | 44.2 | Ordained Bishop | Lambert Bainomugisha | Titular Bishop of Tacia Montana | Auxiliary Bishop of Mbarara, Uganda |
| 58.8 | Ordained Bishop | Judes Bicaba | Bishop of Dédougou, Burkina Faso |
| 88.0 | Died | Matthieu Kanyama † | Bishop Emeritus of Kabinda, Congo (Dem. Rep.) |
| 64.4 | Installed | Walter Mixa | Bishop of Augsburg, Germany |
| 2 Oct | 57.2 | Ordained Bishop | Maroun Elias Nimeh Lahham | Bishop of Tunis, Tunisia |
| 5 Oct | 52.8 | Ordained Bishop | Anthony Alwyn Fernandes Barreto | Bishop of Sindhudurg, India |
| 6 Oct | 99.9 | Died | Ettore Cunial † | Vice-Chamberlain Emeritus of the Apostolic Chamber |
| 7 Oct | 89.0 | Died | Alberto Cosme do Amaral † | Bishop Emeritus of Leiria-Fátima, Portugal |
| 8 Oct | 47.5 | Ordained Bishop | Salomon Lezoutié | Bishop of Odienné, Côte d’Ivoire |
| 57.2 | Ordained Bishop | Giovanni Ricchiuti | Archbishop of Acerenza, Italy |
| 9 Oct | 48.4 | Ordained Bishop | Mário Lucunde | Bishop of Menongue, Angola |
| 62.9 | Died | Charles Kambale Mbogha, A.A. † | Archbishop of Bukavu, Congo (Dem. Rep.) |
| 127.6 | Beatified | Bl. Clemens August Graf von Galen † | Cardinal, Bishop of Münster, Germany |
| 10 Oct | 61.7 | Appointed | Jabulani Adatus Nxumalo, O.M.I. | Archbishop of Bloemfontein, South Africa |
| 63.3 | Appointed | Barry Wood, O.M.I. | Auxiliary Bishop of Durban, South Africa |
| 63.3 | Appointed | Barry Wood, O.M.I. | Titular Bishop of Babra | Auxiliary Bishop of Durban, South Africa |
| 11 Oct | 51.9 | Appointed | Reinhard Hauke | Auxiliary Bishop of Erfurt, Germany |
| 51.9 | Appointed | Reinhard Hauke | Titular Bishop of Flumenpiscense | Auxiliary Bishop of Erfurt, Germany |
| 97.3 | Died | Aloysius John Wycislo † | Bishop Emeritus of Green Bay, Wisconsin, USA |
| 15 Oct | 90.9 | Died | Giuseppe (Joseph) Caprio † | Cardinal, Grand Master Emeritus of the Equestrian Order of the Holy Sepulchre of Jerusalem |
| 65.7 | Ordained Bishop | Giuseppe Cavallotto | Bishop of Cuneo, Italy |
| 51.1 | Appointed | Héctor Luis Morales Sánchez | Prelate of Huautla, Oaxaca, México |
| 76.5 | Retired | Hermenegildo Ramírez Sánchez, M.J. | Prelate of Huautla, Oaxaca, México | Prelate Emeritus |
| 57.2 | Installed | Giovanni Ricchiuti | Archbishop of Acerenza, Italy |
| 44.6 | Appointed | Jorge Solórzano Pérez | Bishop of Matagalpa, Nicaragua |
| 58.6 | Appointed | Fortunato Pablo Urcey, O.A.R. | Prelate of Chota, Peru |
| 16 Oct | 47.6 | Ordained Bishop | Raymond Michel René Centène | Bishop of Vannes, France |
| 75.5 | Retired | Ivo Fürer | Bishop of Sankt Gallen, Switzerland | Bishop Emeritus |
| 48.4 | Installed | Mário Lucunde | Bishop of Menongue, Angola |
| 17 Oct | 77.0 | Retired | Antonio Santucci | Bishop of Trivento, Italy | Bishop Emeritus |
| 63.7 | Appointed | Domenico Angelo Scotti | Bishop of Trivento, Italy |
| 18 Oct | 49.9 | Appointed | Renato Pine Mayugba | Auxiliary Bishop of Lingayen-Dagupan, Philippines |
| 49.9 | Appointed | Renato Pine Mayugba | Titular Bishop of Centuriones | Auxiliary Bishop of Lingayen-Dagupan, Philippines |
| 80.1 | Died | Bernard Charles Ratsimamotoana, M.S. † | Bishop Emeritus of Morondava, Madagascar |
| 19 Oct | 58.6 | Appointed | Guillermo Rodrigo Teodoro Ortiz Mondragón | Bishop of Cuautitlán, México, México |
| 20 Oct | 43.4 | Confirmed | Georges Bacaouni (Bakouny) | Archbishop of Tyr (Melkite), Lebanon |
| 22 Oct | 52.1 | Ordained Bishop | Bernt Ivar (Markus) Eidsvig, C.R.S.A. | Bishop of Oslo, Norway |
| 57.4 | Appointed | Christian Philippe Pierre Robert Nourrichard | Coadjutor Bishop of Evreux, France | Bishop |
| 23 Oct | 145.5 | Canonized | St. Józef Bilczewski † | Archbishop of Lviv, Ukraine |
| 46.5 | Ordained Bishop | Almeida Kanda (Canda) | Bishop of Ndalatando, Angola |
| 57.4 | Ordained Bishop | Jean Marie Henri Legrez, O.P. | Bishop of Saint-Claude, France |
| 24 Oct | 63.6 | Succeeded | Jorge Enrique Jiménez Carvajal, C.I.M. | Archbishop of Cartagena, Colombia |
| 70.0 | Resigned | Carlos José Ruiseco Vieira | Archbishop of Cartagena, Colombia | Archbishop Emeritus |
| 25 Oct | 75.8 | Retired | Alejandro Antonio Buccolini, S.D.B. | Bishop of Río Gallegos, Argentina | Bishop Emeritus |
| 60.9 | Appointed | David Christopher McGough | Auxiliary Bishop of Birmingham, England, Great Britain |
| 60.9 | Appointed | David Christopher McGough | Titular Bishop of Chunavia | Auxiliary Bishop of Birmingham, England, Great Britain |
| 51.0 | Appointed | Juan Carlos Romanin, S.D.B. | Bishop of Río Gallegos, Argentina |
| 71.3 | Died | Francesco Tommasiello † | Bishop of Teano-Calvi, Italy |
| 27 Oct | 51.5 | Ordained Bishop | Francisco Carlos Bach | Bishop of Toledo, Parana, Brazil |
| 75.2 | Retired | René Arnold Valero | Auxiliary Bishop of Brooklyn, New York, USA | Auxiliary Bishop Emeritus |
| 28 Oct | 49.2 | Ordained Bishop | Gilberto Pastana de Oliveira | Bishop of Imperatriz, Maranho, Brazil |
| 31 Oct | 88.7 | Died | Antonio Sahagún López † | Bishop Emeritus of Linares, Nuevo León, México | Auxiliary Bishop Emeritus of Guadalajara, Jalisco, México |