| Date | Age | Bishop | Title |
| unknown | | Giovanni Battista Ansaldo † | Bishop of Cariati e Cerenzia, Italy |
| unknown | | Cristóbal Berrocal † | Bishop of Crotone (Cotrone), Italy |
| unknown | | Pietro Bordone † | Bishop of Umbriatico (Umbriaticum), Italy |
| unknown | | Teodoro Calompsi † | Bishop of Shkodrë (Scutari), Albania |
| unknown | | Theodorus Calumpsi † | Bishop of Lezhë {Lesh, Alessio}, Albania |
| unknown | | Tomás de Cárdenas, O.P. † | Bishop of Verapaz, Guatemala |
| unknown | | Vincenzo Cornelio (Cajetani) † | Bishop of Ostuni, Italy |
| unknown | 53.8 | Giorgio Cornaro † | Bishop Emeritus of Treviso, Italy |
| unknown | | Giovanni Domenico D’Anna † | Bishop of Bovino, Italy |
| unknown | | Adriano Fuscone † | Bishop of Aquino, Italy |
| unknown | | Tommaso Gigli † | Bishop of Piacenza, Italy |
| unknown | | Konrad Adam Glušič † | Bishop of Ljubljana (Laybach; Laibach), Slovenia |
| unknown | | Ioannis Carizia (Grassinga) † | Bishop Emeritus of Lezhë {Lesh, Alessio}, Albania |
| unknown | | Matteo Andrea Guerra † | Bishop of San Marco (Argentano), Italy |
| unknown | | Leonardo Liparola † | Bishop of Nicotera, Italy |
| unknown | | Giovanni Battista Maremonti † | Bishop of Sora, Italy |
| unknown | | Maurice MacGibbon, O. Cist. † | Archbishop of Cashel, Ireland |
| unknown | | Antonio Paliettino (de Monelia), O.F.M. Obs. † | Bishop of Brugnato, Italy |
| unknown | | Pietro Persio † | Bishop of Nusco, Italy |
| unknown | | János Újlaky † | Bishop of Vác, Hungary |
| unknown | | Patrick Walsh † | Bishop of Waterford and Lismore, Ireland |
| Jan | | Francesco Guinigi † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 10 Jan | | Vincenzo de Siena (Caporano), O.P. † | Bishop of Sarno, Italy |
| 20 Jan | 63.0 | Jacques Fouré, O.P. † | Bishop of Chalons-sur-Saône, France |
| 21 Jan | | Francisco Soto Salazar † | Bishop of Salamanca, Spain |
| 1 Feb | 70.0 | Felice Tiranni † | Archbishop of Urbino, Italy |
| 16 Feb | | Johann Mezon von Telz † | Bishop of Olomouc (Olmütz), Czechia |
| 22 Feb | | János Liszthi † | Bishop of Győr (Raab), Hungary |
| 26 Feb | | Gregorius Silvius, O.P. † | Auxiliary Bishop of Ličge, Belgium |
| 3 Mar | | Jerome de Leonibus † | Archbishop of Chieti, Italy |
| 5 Mar | 68.1 | Pedro Mártir Coma, O.P. † | Bishop of Elne, France |
| 9 Mar | | Francesco Martelli † | Bishop of Reggio Emilia, Italy |
| 12 Mar | 80.1 | Jean Hennuyer † | Bishop of Lisieux, France |
| 12 Mar | 70.1 | Alessandro Piccolomini † | Coadjutor Archbishop of Siena, Italy |
| 29 Mar | 50.4 | Louis de Guise de Lorraine † | Cardinal, Bishop of Metz, France |
| 7 Apr | | Gilles Spifame † | Bishop of Nevers, France |
| 11 Apr | 81.2 | Juan de San Millán † | Bishop of León, Spain |
| 21 May | | Juan Rojas † | Bishop of Agrigento (Girgenti), Italy |
| 17 Jun | 67.4 | Bl. Paolo (Scipione) Burali d’Arezzo, C.R. † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 21 Jun | | Emerico Sanseverino † | Bishop of Agde, France |
| 23 Jun | 78.4 | Francisco Sancho Allepuz † | Bishop of Segorbe, Spain |
| 25 Jun | 55.4 | Jean Saint-Romain de Saint-Chamond † | Archbishop Emeritus of Aix, France |
| 30 Jun | 69.4 | Gregor Virneburg † | Auxiliary Bishop of Trier, Germany |
| 5 Jul | 66.0 | Cristoforo Madruzzo † | Cardinal, Bishop of Brixen {Bressanone}, Italy |
| 9 Jul | 49.5 | Miguel Thomŕs de Taxaquet † | Bishop of Lérida, Spain |
| 25 Jul | | Juan Acuńa † | Bishop of L’Aquila, Italy |
| 4 Aug | | Arias da Silva † | Bishop of Porto, Portugal |
| 4 Aug | | Manuel de Menezes † | Bishop of Coimbra, Portugal |
| 3 Sep | 45.4 | Giulio della Rovere † | Cardinal, Archbishop of Ravenna, Italy |
| 22 Sep | | Pedro Serrano Téllez † | Bishop of Coria, Spain |
| 9 Oct | 64.7 | Fernando de Tricio Arenzana † | Bishop of Salamanca, Spain |
| Nov | | Jean de Joly † | Bishop Emeritus of Saint-Paul-Trois-Châteaux, France |
| Nov | | Giovanni Francesco Rossi † | Auxiliary Bishop of Concordia (Sagittaria), Italy |
| 1 Nov | | Antonio da San Michele (Gaspar) Rodríguez, O.F.M. Obs. † | Archbishop of Lanciano, Italy |
| 5 Nov | | Jean du Fay, O.S.B. † | Bishop Emeritus of Poitiers, France |
| 23 Nov | | Jean de Sossiondo † | Bishop of Bayonne, France |
| 30 Nov | 65.9 | Antoine Havet, O.P. † | Bishop of Namur {Namen}, Belgium |
| Dec | 77.9 | Nicholas Heath † | Archbishop Emeritus of York, England, Great Britain |
| 10 Dec | | Marcantonio Montefiori † | Bishop of Nebbio, France |