| Date | Age | Bishop | Title |
| unknown | 44.3 | Epifanio Fanelli, O.S.B. † | Bishop of Cefalonia e Zante, Greece |
| unknown | 60.0 | Andrea Arcadio Stanila † | Titular Bishop |
| unknown | 63.8 | Alonso Vargas y Barca, O.S.A. † | Bishop of Comayagua, Honduras |
| 11 Jan | | Daniele Giustiniani † | Bishop of Bergamo, Italy |
| 16 Jan | 67.0 | Fortunato Ilario Carafa della Spina † | Cardinal, Bishop of Aversa, Italy |
| 19 Jan | 55.0 | Laurentius Fergusius Lea † | Bishop of Derry, Ireland |
| 16 Feb | 51.3 | Bernardino Plastina, O.M. † | Bishop of Oppido Mamertina, Italy |
| 6 Mar | 71.9 | Johann Euchar von Schenk von Castell † | Bishop of Eichstätt, Germany |
| 9 Mar | 66.0 | Wilhelm von Vintler von Runkelstein † | Auxiliary Bishop of Brixen {Bressanone}, Italy |
| 24 Mar | 63.2 | Paul-Philippe de Chaumont † | Bishop Emeritus of Acqs (Dax), France |
| 14 Apr | 58.7 | Custodio do Pinho † | Titular Bishop of Hierapolis in Isauria |
| 22 Apr | 54.3 | Manuel de Alba † | Bishop of Barcelona, Spain |
| May | 66.3 | Francesco Antonio Triveri, O.F.M. Conv. † | Bishop of Melfi e Rapolla, Italy |
| 9 May | 51.4 | Jean-Baltazar de Cabanes de Viens † | Bishop of Vence, France |
| 12 May | 88.4 | Georges d’Aubusson de la Feuillade † | Bishop of Metz, France |
| 12 May | 59.4 | Francesco Maria Moles, C.R. † | Bishop Emeritus of Nola, Italy |
| 17 May | 65.0 | Michael Ludovicus Tevenardi, O.P. † | Bishop of Saluzzo, Italy |
| 21 May | 72.4 | Jan Stanisław Zbąski † | Bishop of Warmia (Ermland), Poland |
| 31 May | 71.2 | Lodovico Settala † | Bishop of Cremona, Italy |
| 18 Jun | 71.8 | St. Gregorio Giovanni Gasparo Barbarigo † | Cardinal, Bishop of Padova {Padua}, Italy |
| 20 Jun | 48.0 | Jan Kazimierz Denhoff † | Cardinal, Bishop Emeritus of Cesena, Italy |
| Jul | 61.0 | Nicolò Nardini † | Bishop of Acquapendente, Italy |
| 2 Aug | 63.6 | Giuseppe Bologna † | Archbishop of Capua, Italy |
| 2 Aug | 76.3 | Girolamo Prignano † | Bishop of Satriano e Campagna, Italy |
| 24 Aug | 73.6 | Bernardo de Carrasco y Saavedra, O.P. † | Bishop of La Paz, Bolivia |
| Sep | 45.4 | Gennaro Crispino † | Bishop of Squillace, Italy |
| 14 Sep | 75.7 | Juan Grande Santos de San Pedro † | Bishop of Sigüenza, Spain |
| 30 Sep | 56.4 | Giuseppe Antonio Sillani Leoncilli † | Bishop of Civita Castellana e Orte, Italy |
| 27 Oct | 54.7 | Francesco Antonio Volturale † | Bishop of Vieste, Italy |
| 6 Nov | 64.8 | Domenico Maria Corsi † | Cardinal, Bishop of Rimini, Italy |
| 9 Nov | 80.9 | Louis d’Anglure de Bourlemont † | Archbishop of Bordeaux, France |
| 11 Nov | 59.9 | Jean-Baptiste Adhémar de Monteil de Grignan † | Archbishop of Arles, France |
| 25 Nov | 56.9 | Nicolò Caranza † | Bishop of Borgo San Donnino, Italy |
| 17 Dec | 60.7 | Pietro Leoni † | Bishop of Verona, Italy |
| 19 Dec | 85.0 | Giacomo Franzoni † | Cardinal, Bishop Emeritus of Camerino, Italy |