| Date | Age | Bishop | Title |
| unknown | 74.0 | François-René Boussen † | Bishop of Brugge {Bruges}, Belgium |
| unknown | 65.7 | Leone Ciampa † | Archbishop of Conza-Campagna, Italy |
| unknown | 91.2 | Paolo Garzilli † | Bishop of Sessa Aurunca, Italy |
| unknown | 74.0 | Taddeo Garzilli (Garzillo) † | Bishop of Acerra, Italy |
| unknown | 70.4 | Giandomenico Guida † | Bishop of Oria, Italy |
| 3 Jan | 72.4 | Johann Leonard Pfaff † | Bishop of Fulda, Germany |
| 11 Jan | 41.9 | Francesco Saverio Massimo † | Cardinal, Priest of the Roman Curia - Other |
| 15 Jan | 81.6 | Francesco Luigi Piervisani † | Bishop of Nocera Umbra, Italy |
| 13 Mar | 71.5 | Cipriano Sánchez Varela † | Bishop of Plasencia, Spain |
| 14 Mar | 84.8 | Carlo Puoti † | Bishop of Alife, Italy |
| 30 Mar | 70.6 | Ramón Montero † | Archbishop of Burgos, Spain |
| 10 Apr | 42.2 | William J. Quarter † | Bishop of Chicago, Illinois, USA |
| 15 Apr | 74.4 | Giuseppe Gaetano Incontri † | Bishop of Volterra, Italy |
| 23 Apr | 51.5 | John Stephen (Jean Etienne) Bazin † | Bishop of Vincennes, Indiana, USA |
| 23 Apr | 53.5 | Paul Naudo † | Archbishop of Avignon, France |
| 24 Apr | 67.7 | Johann Aloys Hoffmann † | Auxiliary Bishop of Salzburg, Austria |
| 27 Apr | 77.3 | Roman Sebastian (Franz Xaver) Zängerle, O.S.B. † | Bishop of Seckau, Austria |
| 27 May | 87.1 | Jean Jacoupy † | Bishop Emeritus of Agen, France |
| 23 Jun | 75.2 | Giuseppe Maria Giove † | Bishop of Bova, Italy |
| 27 Jun | 54.7 | Denis-Auguste Affre † | Archbishop of Paris, France |
| 16 Jul | 32.2 | Jean Georges Collomb, S. M. † | Vicar Apostolic of Melanesia, Pacific (Oceania) |
| 11 Sep | 53.3 | Anton Ocskay † | Bishop of Košice, Slovakia |
| 26 Sep | 71.5 | Manuel Pires de Azevedo Loureiro † | Bishop of Beja, Portugal |
| 29 Sep | 70.4 | Anton Ferdinand Holtgreven † | Auxiliary Bishop of Paderborn, Germany |
| 9 Oct | 68.2 | Juan Gilberto Ruiz Capucín y Feijó † | Bishop of Cuenca, Ecuador |
| 25 Oct | 75.8 | Aloisio San Vitale † | Bishop of Piacenza, Italy |
| 15 Dec | 71.9 | Gaspar Cos Soberón † | Bishop of Calahorra y La Calzada, Spain |
| 16 Dec | 98.9 | Claude-Jean-Joseph Brulley de La Brunière † | Bishop of Mende, France |
| 29 Dec | 69.6 | Johann Stanislaus Kutowski † | Auxiliary Bishop of Chelmno (Culma), Poland |
| 30 Dec | 60.2 | Petrus Leopold Kaiser † | Bishop of Mainz, Germany |