| Date | Age | Bishop | Title |
| unknown | | Giovanni Battista Ansaldo † | Bishop of Cariati e Cerenzia, Italy |
| unknown | | Cristóbal Berrocal † | Bishop of Crotone (Cotrone), Italy |
| unknown | | Tomás de Cárdenas, O.P. † | Bishop of Verapaz, Guatemala |
| unknown | | Vincenzo Cornelio (Cajetani) † | Bishop of Ostuni, Italy |
| unknown | | Giovanni Domenico D’Anna † | Bishop of Bovino, Italy |
| unknown | | Tommaso Gigli † | Bishop of Piacenza, Italy |
| unknown | | Matteo Guerra † | Bishop of San Marco (Argentano), Italy |
| unknown | | Girolamo Leoni † | Archbishop of Chieti, Italy |
| unknown | | Leonardo Liparola † | Bishop of Nicotera, Italy |
| unknown | | Giovanbattista Maremonti † | Bishop of Sora, Italy |
| unknown | | Maurice MacGibbon, O. Cist. † | Archbishop of Cashel, Ireland |
| unknown | | Antioco Nin † | Bishop of Alghero, Italy |
| unknown | | Antonio Paliettino (de Monelia), O.F.M. Conv. † | Bishop of Brugnato, Italy |
| unknown | | Pietro Persio † | Bishop of Nusco, Italy |
| Jan | | Francesco Guinigi † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 10 Jan | | Vincenzo de Siena, O.P. † | Bishop of Sarno, Italy |
| 20 Jan | | Jacques Fouré, O.P. † | Bishop of Chalons-sur-Saône, France |
| 21 Jan | | Francisco Soto Salazar † | Bishop of Salamanca, Spain |
| 1 Feb | | Felice Tiranni † | Archbishop of Urbino, Italy |
| 1 Feb | 72.1 | Rodrigo de Vadillo, O.S.B. † | Bishop of Cefalù, Italy |
| 16 Feb | | Johann Mezon von Telz † | Bishop of Olomouc (Olmütz), Czech Republic |
| 5 Mar | | Pedro Mártir Coma, O.P. † | Bishop of Elne, France |
| 9 Mar | | Francesco Martelli † | Bishop of Reggio Emilia, Italy |
| 12 Mar | | Jean Hennuyer † | Bishop of Lisieux, France |
| 29 Mar | 50.4 | Louis de Guise de Lorraine † | Cardinal, Bishop of Metz, France |
| 11 Apr | 81.3 | Juan de San Millán † | Bishop of León, Spain |
| 21 May | | Juan Rojas † | Bishop of Agrigento (Girgenti), Italy |
| 17 Jun | 67.5 | Bl. Paul Burali d’Arezzo, C.R. † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 23 Jun | 78.5 | Francisco Sancho Allepuz † | Bishop of Segovia, Spain |
| 30 Jun | 69.5 | Gregor Virneburg † | Auxiliary Bishop of Trier, Germany |
| 5 Jul | 66.0 | Cristoforo Madruzzo † | Cardinal, Bishop of Brixen {Bressanone}, Italy |
| 9 Jul | 47.5 | Miguel Thomas de Taxaquet † | Bishop of Lérida, Spain |
| 25 Jul | | Juan Acuña † | Bishop of L’Aquila, Italy |
| 4 Aug | | Aires da Silva † | Bishop of Porto, Portugal |
| 3 Sep | 45.4 | Giulio della Rovere † | Cardinal, Archbishop of Ravenna, Italy |
| 22 Sep | | Pedro Serrano Téllez † | Bishop of Coria, Spain |
| 1 Oct | | Johan Knijf, O.F.M. † | Bishop of Groningen, Netherlands |
| 9 Oct | 63.8 | Fernando Tricio Arenzana † | Bishop of Salamanca, Spain |
| 1 Nov | | Antonio Gaspar Rodríguez, O.F.M. † | Archbishop of Lanciano, Italy |
| 30 Nov | | Antoine Havet † | Bishop of Namur {Namen}, Belgium |
| Dec | 77.9 | Nicholas Heath † | Archbishop Emeritus of York, England, Great Britain |