| Date | Age | Bishop | Title |
| unknown | 70.4 | Jean Dominique Altei † | Bishop of Scardona (Skradin), Italy |
| unknown | 74.0 | Pietro Mancini † | Bishop of Minervino Murge, Italy |
| unknown | 58.9 | Nicola Vecchi † | Bishop of Teano, Italy |
| 5 Jan | 66.6 | Stanisław Żarnowiecki † | Auxiliary Bishop of Poznań, Poland |
| 21 Jan | 75.3 | Antônio de Pádua e Belas, O.F.M. † | Bishop Emeritus of São Luís do Maranhão, Brazil |
| 24 Jan | 60.3 | Marco (Matteo) Crescesi † | Bishop of Shkodrë (Scutari), Albania |
| 2 Mar | 89.8 | Carlo Nicodemi † | Bishop of Sant’Angelo dei Lombardi e Bisaccia, Italy |
| 3 Mar | 78.1 | Ottavio Boni † | Titular Archbishop of Nazianzus |
| 8 Mar | 75.1 | Adam Kłokocki † | Auxiliary Bishop of Lutsk and Zhytomyr (Łuck and Zytomierz), Ukraine |
| 28 Mar | 84.8 | Louis-Charles du Plessis d’Argentré † | Bishop of Limoges, France |
| 1 Apr | 59.3 | James Jerome Sharrock, O.S.B. † | Former Bishop-Elect |
| 9 Apr | 59.1 | Georg Karl Ignaz von Fechenbach zu Laudenbach † | Bishop of Würzburg, Germany |
| May | | Charles Lynagh (Lynan) † | Bishop of Achonry, Ireland |
| 1 May | 52.1 | Jean-Eléonor Montanier de Belmont † | Bishop of Saint-Flour, France |
| 18 May | 63.4 | Manuel Joaquim Da Silva † | Titular Archbishop of Hadrianopolis in Haemimonto |
| 21 May | 74.4 | Stefan Wojciech von Łubieński † | Auxiliary Bishop of Gniezno, Poland |
| 4 Jun | 64.4 | Francesco Saverio Passari † | Titular Archbishop of Larissa in Thessalia |
| 10 Jun | 98.7 | Jean-Baptiste de Belloy-Morangle † | Cardinal, Archbishop of Paris, France |
| 17 Jun | 83.5 | Louis-Joseph de Montmorency-Laval † | Cardinal, Bishop Emeritus of Metz, France |
| 30 Jun | 70.8 | Barthélemy-Louis-Martin de Chaumont de La Galaisière † | Bishop of Saint-Dié, France |
| 6 Jul | 76.9 | Alexandre de Gouvea (Gouveia), T.O.R. † | Bishop of Peking [Beijing], China |
| 23 Jul | 62.5 | Domingo Collantes, O.P. † | Bishop of Nueva Caceres, Philippines |
| 28 Jul | 75.9 | Jacinto Carlos da Silveira † | Bishop Emeritus of São Luís do Maranhão, Brazil |
| 9 Aug | 72.0 | Carlo Bellisomi † | Cardinal, Bishop of Cesena, Italy |
| 10 Aug | 76.7 | Jan Chrzciciel Albertrandi † | Auxiliary Bishop of Warszawa, Poland |
| 26 Aug | 33.2 | Jan Nepomucen Kossakowski † | Bishop of Vilnius, Lithuania |
| 8 Sep | 62.0 | Joaquim do Rosário Vieira, O.F.M. † | Bishop of Beja, Portugal |
| 26 Sep | 78.4 | Pierre-Augustin Godard de Belboeuf † | Bishop Emeritus of Avranches, France |
| 8 Oct | 64.5 | Vicente Alexandre de Tovar † | Prelate of Goiás, Brazil |
| 17 Oct | 71.9 | Jean-Évangéliste Zäpfel (Zaepfell) † | Bishop of Liège, Belgium |
| 21 Oct | 61.9 | Nicolò Saverio Gamboni † | Patriarch of Venezia {Venice}, Italy |
| 8 Dec | 82.9 | Mattaeus Massarech † | Archbishop of Skopje, Macedonia |
| 16 Dec | 83.0 | Francisco da Assumpção e Brito, O.S.A. † | Archbishop Emeritus of Goa, India |
| 27 Dec | 67.1 | Francisco Javier Utrera † | Bishop of Cádiz, Spain |
| 29 Dec | 79.5 | Domenico Spoto † | Bishop of Cefalù, Italy |
| 29 Dec | 83.2 | Luigi Valenti Gonzaga † | Cardinal, Librarian of the Vatican Library |
| 31 Dec | 65.7 | Onufry Kajetan Szembek † | Bishop of Płock, Poland |