| Date | Age | Bishop | Title |
| unknown | | Jacopo Aldobrandini † | Bishop of Troia, Italy |
| unknown | 60.0 | Martín Aspi Sierra † | Bishop of Palencia, Spain |
| unknown | | Bernardo de Benedictis † | Bishop of Castellaneta, Italy |
| unknown | | Jacobus Brezwiczki † | Auxiliary Bishop of Poznań, Poland |
| unknown | | Pietro Cartolari † | Bishop of Montefeltro, Italy |
| unknown | | Agostino Gisolfi, O.P. † | Bishop of Syros (e Milos), Greece |
| unknown | | Giovanni Battista Guanzato † | Bishop of Polignano (Polinianum), Italy |
| unknown | 47.0 | Vittorio Guarini † | Bishop of Anagni, Italy |
| unknown | | Giulio Cesare Guarnieri † | Bishop of Satriano e Campagna, Italy |
| unknown | | Pompeo de Nobili † | Bishop of Ripatransone, Italy |
| unknown | | Paolo Regio † | Bishop of Vico Equense, Italy |
| unknown | | Toma Ursini, O.F.M. † | Archbishop of Bar (Antivari), Montenegro |
| 2 Jan | | Jean-François Berliet † | Archbishop of Tarentaise (Moûtiers-en-Tarentaise), France |
| 7 Jan | 44.0 | Azarias Friton, O.P. † | Archbishop of Nachitschewan (Naxivan, Nakhtchevan, Nakhchivan), Armenia |
| 11 Jan | | Camillo Olario (Aulari) † | Bishop of Bobbio, Italy |
| 23 Jan | | Alessandro Musotti † | Bishop of Imola, Italy |
| 23 Jan | | Massimiliano Palumbara (Palombella) † | Archbishop of Benevento, Italy |
| Feb | | Matteo Sanminiato † | Archbishop of Chieti, Italy |
| 3 Feb | 79.4 | Tolomeo Gallio † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 10 Mar | | Ascanio Libertano (Libertani) † | Bishop of Cagli, Italy |
| 25 Mar | | Johann Ertlin † | Auxiliary Bishop of Bamberg, Germany |
| 27 Apr | | Francisco Robuster Sala † | Bishop of Vic, Spain |
| 28 Apr | | Christophe de la Vallée † | Bishop of Toul, France |
| 13 May | | Andrés de Casso, O.P. † | Bishop of León, Spain |
| 3 Jun | | Orazio Marzani † | Bishop of San Severino (Marche), Italy |
| 30 Jun | 68.8 | Cesare Baronio, C.O. † | Cardinal, Cardinal-Priest of Santi Nereo ed Achilleo |
| 11 Jul | | Nicolò Orazi † | Bishop of Catanzaro, Italy |
| 13 Jul | | Gaspare Silingardi † | Bishop of Modena, Italy |
| 31 Jul | 65.6 | Diego Monreal † | Bishop of Huesca, Spain |
| 4 Aug | 68.6 | Bartolomeo Ferrero † | Bishop of Aosta, Italy |
| 17 Aug | 64.6 | Anselmo Marzato, O.F.M. Cap. † | Cardinal, Archbishop of Chieti, Italy |
| 18 Aug | | Andrea Longo † | Bishop of Civita Castellana e Orte, Italy |
| 21 Aug | | Alfonso Laso Sedeño † | Bishop of Mallorca, Spain |
| 21 Aug | 68.0 | Cesare Speciano (Speciani) † | Bishop of Cremona, Italy |
| Sep | | Richard Brady, O.F.M. † | Bishop of Kilmore, Ireland |
| 2 Sep | | Paolo Tasso † | Archbishop of Lanciano, Italy |
| 15 Sep | | Jean Garnier, O.S.B. † | Bishop of Montpellier, France |
| 20 Sep | | Sebastián Perea † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 31 Oct | | Wawrzyniec Goślicki † | Bishop of Poznań, Poland |
| 3 Nov | 53.8 | Tiberio Mandosi † | Bishop of Montalto (delle Marche), Italy |
| 24 Nov | 40.4 | Charles de Lorraine-Vaudémont (III) † | Cardinal, Administrator of Strasbourg, France |
| 25 Dec | 63.0 | Giulio Santuccio, O.F.M. Conv. † | Bishop of Sant’Agata de’ Goti, Italy |