| Date | Age | Bishop | Title |
| unknown | 50.0 | Giovanni Atzori † | Bishop-Elect of Bosa, Italy |
| unknown | 58.0 | Carlo Bornio † | Bishop of Castro di Puglia, Italy |
| unknown | | Sixtus Carcanus, O.P. † | Auxiliary Bishop of Gurk, Austria |
| unknown | | Nicola Maria Madaffari † | Bishop of Bova, Italy |
| unknown | | Siméon-Étienne de Popian † | Bishop of Cahors, France |
| unknown | | Maurizio Ricci † | Bishop of Cariati e Cerenzia, Italy |
| unknown | | Ippolito Riva, C.R. † | Bishop of Castellammare di Stabia, Italy |
| Jan | | Vincenzo Landinelli † | Bishop Emeritus of Albenga, Italy |
| 3 Jan | | Luis Díaz Aux de Armendáriz, O. Cist. † | Bishop of Urgell, Spain |
| 3 Jan | 52.0 | Domenico Rivarola † | Cardinal, Titular Archbishop of Nazareth |
| 5 Jan | 48.3 | Fabiano Giustiniani, C.O. † | Bishop of Ajaccio, France |
| 11 Jan | | Raymond de La Marthonie † | Bishop of Limoges, France |
| Mar | 48.2 | Cyprian Pavoni, O.S.B. † | Bishop of Rimini, Italy |
| 3 Mar | 51.2 | Pedro de Mata y Haro, C.R. † | Bishop of Capaccio, Italy |
| 6 Mar | 52.2 | Hieronymus Otto Agricola † | Bishop of Brixen {Bressanone}, Italy |
| 10 Mar | | Francisco Senjust, O.S.B. † | Bishop of Gerona, Spain |
| 3 Apr | 65.3 | Giovanni Linati † | Bishop of Piacenza, Italy |
| 7 Apr | 56.3 | Bonifazio Bevilacqua Aldobrandini † | Cardinal, Cardinal-Bishop of Frascati |
| 10 Apr | | Muzio Cinquini † | Bishop Emeritus of Avellino e Frigento, Italy |
| 1 Jul | 82.5 | Alfonso López Gallo † | Bishop of Valladolid, Spain |
| 9 Jul | 60.5 | Matthaeus Erasmos, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 10 Jul | 51.5 | Giovanni Battista Ferrero, O.P. † | Archbishop of Torino {Turin}, Italy |
| 23 Jul | 47.6 | Girolamo Sarriano, C.R. † | Bishop of Vico Equense, Italy |
| 4 Aug | 76.4 | Anastasio Germonio † | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| 5 Aug | 65.0 | Pedro González del Castillo † | Bishop of Calahorra y La Calzada, Spain |
| 9 Aug | 58.6 | Alberto Caccano, O.P. † | Bishop of Lipari, Italy |
| 22 Aug | | Pellegrino Bertacchi † | Bishop of Modena, Italy |
| 27 Aug | | Antonio d’Aquino † | Archbishop of Taranto, Italy |
| 30 Aug | 77.7 | Johann Flugi d&rqsuo;Apremont † | Bishop Emeritus of Chur, Switzerland |
| Sep | | Dionisio Martini, O.F.M. † | Bishop of Nepi e Sutri, Italy |
| 4 Sep | | Lorenzo Pérez de Grado † | Bishop of Cuzco, Peru |
| 2 Oct | | Sebastiano Ghislieri † | Bishop of Strongoli, Italy |
| 11 Oct | 58.9 | Bernardo de Valbuena y Villanueva † | Bishop of Puerto Rico (Porto Rico) |
| 15 Oct | | Gonzalo del Campo (López de Ocampo) † | Archbishop of Lima, Peru |
| 3 Nov | 54.8 | Giambattista Leni † | Cardinal, Bishop of Ferrara, Italy |
| 13 Nov | 75.9 | Alfonso Manzanedo de Quiñones † | Titular Patriarch of Jerusalem {Gerusalemme}, Palestine |
| 16 Nov | 52.5 | Sixt Werner von Vogt von Altensumerau und Prasberg † | Bishop-Elect of Konstanz {Constance}, Germany |
| 12 Dec | 60.9 | Lorenzo Landi † | Bishop of Fossombrone, Italy |
| 16 Dec | | Ascanio Castagna † | Bishop of Isola, Italy |
| 20 Dec | 41.5 | Bernard Daffis † | Bishop of Lombez, France |
| 26 Dec | 33.9 | Vincenzo Gonzaga † | |