| Date | Age | Bishop | Title |
| unknown | | Macaire Samman † | Bishop Emeritus |
| 3 Jan | 66.0 | Eduardo Vásquez, O.P. † | Bishop of Panamá |
| 4 Jan | 73.9 | Adam Wojtkiewicz † | Bishop of Minsk, Belarus |
| 19 Jan | 71.2 | Johann Georg Müller † | Bishop of Münster, Germany |
| 26 Jan | 46.3 | Francisco de Paula Suárez Peredo y Bezares † | Bishop of Veracruz-Jalapa, México |
| 30 Jan | 79.3 | Bertrand-Sévère Mascarou-Laurence † | Bishop of Tarbes, France |
| 2 Feb | 65.4 | Mariano Puigllat y Amigó † | Bishop of Lérida, Spain |
| 12 Feb | 58.6 | Basilio Gil y Bueno † | Bishop of Huesca, Spain |
| 25 Feb | 82.3 | Louis-Jacques-Maurice de Bonald † | Cardinal, Archbishop of Lyon (-Vienne), France |
| 10 Mar | 49.0 | [Paul Marie Stefan de Djunkowsky] † | Prefect Emeritus of Arctic Pole |
| 19 Mar | | Denys Joseph Hayek (Samne) † | Archbishop Emeritus of Alep [Beroea, Halab] (Syrian), Syria |
| 25 Mar | 82.2 | Giovanni Battista Ciofi † | Bishop of Chiusi e Pienza, Italy |
| 26 Mar | 79.0 | José Manuel de Lemos † | Bishop of Coimbra, Portugal |
| 31 Mar | 66.1 | Antonín Arnošt Schaaffgotsche † | Bishop of Brno, Czechia |
| 12 Apr | 82.6 | Raffaele Biale † | Bishop of Albenga, Italy |
| 13 Apr | 76.1 | Alexandru Dobra † | Bishop of Lugoj (Romanian), Romania |
| 15 Apr | 58.5 | Matteo Eustachio Gonella † | Cardinal, Bishop of Viterbo e Tuscania, Italy |
| 24 Apr | 62.1 | Gaetano Maria Striscia (Stiscia) † | Bishop of Nusco, Italy |
| 30 Apr | 78.2 | Thomas Cooke † | Bishop of Trois-Rivières, Québec, Canada |
| 2 May | 66.1 | Jean-Sébastien-Adolphe Devoucoux † | Bishop of Évreux, France |
| 3 May | 83.8 | Giovanni Battista Naselli, C.O. † | Archbishop of Palermo, Italy |
| 14 May | 48.4 | Francisco Cardoso Ayres † | Bishop of Olinda, Brazil |
| 25 May | 70.2 | Jean-Marie (John Mary) Odin, C.M. † | Archbishop of New Orleans, Louisiana, USA |
| 31 May | 53.5 | Thomas Grant † | Bishop of Southwark, England, Great Britain |
| 28 Jun | 59.0 | John Derry † | Bishop of Clonfert, Ireland |
| 4 Jul | 74.0 | František Petr Krejčí † | Auxiliary Bishop of Praha {Prague}, Czechia |
| 13 Jul | 65.2 | Georg Anton von Stahl † | Bishop of Würzburg, Germany |
| 21 Jul | 62.9 | Pantaleón Montserrat y Navarro † | Bishop of Barcelona, Spain |
| 24 Jul | 54.0 | Nial MacCabe, C.M. † | Bishop of Ardagh (and Clonmacnois), Ireland |
| 28 Jul | 59.4 | Felice Cantimorri, O.F.M. Cap. † | Bishop of Parma, Italy |
| 28 Jul | 83.5 | Estevam a Jesu Maria da Costa, O.F.M. Ref. † | Bishop of Angra, Portugal |
| 28 Jul | 70.6 | Mariano José de Escalada Bustillo y Zeballos † | Archbishop of Buenos Aires, Argentina |
| 28 Jul | 65.8 | Francisco Fleix y Soláns † | Archbishop of Tarragona, Spain |
| 4 Aug | 77.6 | Giuseppe Maria Severa † | Bishop of Terni, Italy |
| 7 Aug | 50.5 | Macaire (Ignatius) Akkawi † | Archbishop of Bosra (Melkite Greek), Syria |
| 7 Aug | 71.0 | Pedro Cirilo Uriz y Labayru † | Bishop of Pamplona (-Tudela), Spain |
| 25 Aug | 71.6 | Thomas Heyden † | Priest of Pittsburgh, Pennsylvania, USA |
| 2 Sep | 72.5 | Fernando Argüelles Miranda † | Bishop of Astorga, Spain |
| 11 Sep | 77.2 | Ladislav Zábojský † | Bishop of Spiš, Slovakia |
| 21 Sep | 52.9 | Michael Adrian Hankinson, O.S.B. † | Bishop of Port-Louis, Mauritius |
| 23 Sep | 70.5 | Matthias Majercsak † | Auxiliary Bishop of Włocławek (Kujawy, Kalisze), Poland |
| 7 Oct | 72.3 | Cosimo Barnaba Corsi † | Cardinal, Archbishop of Pisa, Italy |
| 7 Oct | 78.0 | Mario Mattei † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 12 Oct | 70.5 | Dalmazio (Pietro) d’Andrea, O.F.M. Cap. † | Bishop of Bova, Italy |
| 13 Oct | 72.4 | Charles-François Baillargeon † | Archbishop of Québec, Canada |
| 15 Oct | 52.7 | Hilarión Alcázar, O.P. † | Vicar Apostolic of Eastern Tonking {Tonkino Orientale}, Viet Nam |
| 16 Oct | 62.3 | Alessandro Ottaviano Riccardi di Netro † | Archbishop of Torino {Turin}, Italy |
| 18 Oct | 76.8 | André Charvaz † | Archbishop Emeritus of Genova, Italy |
| 24 Oct | 62.8 | St. Antonio María Claret y Clará, C.M.F. † | Archbishop Emeritus of Santiago de Cuba |
| 2 Nov | 66.3 | Giovanni Giuseppe Longobardi † | Bishop of Andria, Italy |
| 15 Nov | 68.7 | Vinko Zubranić † | Bishop of Dubrovnik (Ragusa), Croatia |
| 18 Nov | 63.0 | Pedro Lucas Asensio Poves † | Bishop of Jaca, Spain |
| 20 Nov | 86.8 | Louis-Jean-Julien Robiou (de la Tréhonnais) † | Bishop Emeritus of Coutances, France |
| 23 Nov | | Luigi Lastaria † | Bishop of Cefalonia e Zante, Greece |
| 18 Dec | 44.6 | Pierre-Paul de Cuttoli † | Bishop of Ajaccio, France |
| 22 Dec | 70.1 | Enrico Orfei † | Cardinal, Archbishop of Ravenna, Italy |
| 25 Dec | 73.9 | Eduard Jakob Wedekin † | Bishop of Hildesheim, Germany |