| Date | Age | Bishop | Title |
| unknown | 59.6 | Giovanni Battista Ariberti, C.O. † | Titular Archbishop of Palmyra |
| unknown | | Caietanus de Paulis † | Auxiliary Bishop of Velletri, Italy |
| 16 Jan | 49.0 | Vincenzo Antonio Maria Muscettola † | Bishop of Recanati e Loreto, Italy |
| 19 Jan | 69.8 | Antonio Maria Vantini † | Bishop of Montepulciano, Italy |
| 23 Jan | 49.3 | Francisco Zarceño Martínez, O.SS.T. † | Bishop of Solsona, Spain |
| 25 Jan | 52.5 | Francesco Bernardo de Cespedes † | Bishop of Bosa, Italy |
| 28 Jan | 79.9 | Francesco Maria Muscettola, C.R. † | Archbishop Emeritus of Rossano, Italy |
| 18 Feb | 81.0 | James Gordon † | Vicar Apostolic of Lowland District, Scotland, Great Britain |
| 20 Feb | 88.4 | Nicolò Maria de’ Franchi, O.P. † | Archbishop of Genova, Italy |
| 20 Feb | 55.7 | Jan Aleksander Lipski † | Cardinal, Bishop of Kraków, Poland |
| 22 Feb | 98.0 | Francisco Ignacio Añoa Busto † | Archbishop of Zaragoza, Spain |
| 28 Feb | 72.0 | Joannes Bapt. Senzasoni † | Titular Bishop of Olympus (Olimpus) |
| Mar | 56.6 | Bernardino Campi † | Bishop of Bobbio, Italy |
| 1 Mar | 37.4 | Nicolaus Mauritius Fontana † | Archbishop of Oristano, Italy |
| 10 Mar | 71.6 | Domenico Antonio Manfredi † | Bishop of Boiano, Italy |
| 13 Mar | 90.3 | Charles-Gaspard-Guillaume de Vintimille du Luc † | Archbishop of Paris, France |
| 20 Mar | 71.7 | Francesco Antonio Bussolini, O.S.B. † | Bishop of Penne e Atri, Italy |
| 24 Mar | 59.5 | Joseph Franz Valerian Felix von Arco † | Bishop-Elect of Chiemsee, Germany |
| 25 Mar | 77.9 | Francesco Martinengo † | Auxiliary Bishop of Brescia, Italy |
| 29 Mar | 75.5 | Christophe-Louis Turpin de Crissé de Sanzay † | Bishop of Nantes, France |
| 5 Apr | 84.8 | Álvaro de Abranches e Noronha † | Bishop of Leiria, Portugal |
| 15 Apr | 54.3 | Paolo Cernuschi † | Bishop of Como, Italy |
| 5 May | 78.3 | Edme Mongin † | Bishop of Bazas, France |
| 10 May | 64.3 | Charles-François des Moustiers de Mérinville † | Bishop of Chartres, France |
| 13 May | 74.2 | François-César Le Blanc † | Bishop of Avranches, France |
| 18 May | 70.6 | Lodovico Maria Pandolfini † | Bishop of Volterra, Italy |
| 25 May | 68.8 | Pier Gerolamo Caravadossi, O.P. † | Bishop of Casale Monferrato, Italy |
| 15 Jul | 82.5 | Ludovico Anselmo Gualtieri † | Bishop of Todi, Italy |
| 15 Jul | 69.4 | Giambattista Labanchi † | Bishop of Oria, Italy |
| 20 Jul | 48.2 | Jacques-Bonne Gigault de Bellefonds † | Archbishop of Paris, France |
| 22 Jul | 78.8 | Girolamo Crispi † | Archbishop of Ferrara, Italy |
| 26 Jul | 72.4 | Friedrich Karl von Schönborn † | Bishop of Würzburg, Germany |
| 29 Jul | 91.7 | José de Sousa Castelo Branco † | Bishop Emeritus of Funchal, Portugal |
| 27 Aug | 67.5 | Carlo Leopoldo Calcagnini † | Cardinal, Cardinal-Deacon of Santa Maria in Ara Coeli |
| 3 Sep | 63.4 | Matteo (Marcello) Sacco † | Bishop of San Marco (Argentano), Italy |
| 4 Sep | 64.8 | Andrés Cabrejas Molina † | Bishop of Jaén, Spain |
| 15 Sep | 38.7 | Jean-Louis du Lau d’Allemans † | Bishop of Digne, France |
| 2 Oct | 64.8 | Michał Remigiusz Łaszewski † | Auxiliary Bishop of Warmia (Ermland), Poland |
| 5 Nov | 67.1 | Gherardo Zandemaria † | Bishop of Piacenza, Italy |
| 17 Nov | 47.6 | José de Peralta Barrionuevo y Rocha Benavídez, O.P. † | Bishop of La Paz, Bolivia |
| 26 Nov | | Michael McDonough, O.P. † | Bishop of Kilmore, Ireland |
| 12 Dec | | Athanasius Czeptyski (Szeptycki) † | Archbishop of Kyiv-Halyč {Kiev} (Ruthenian), Ukraine |
| 12 Dec | 60.9 | Athanasiy Sheptyskyi † | Archbishop of Foreign Archdiocese |
| 18 Dec | 72.2 | Agustín Rodríguez Delgado † | Archbishop of Lima, Peru |