| Date | Age | Bishop | Title |
| unknown | | Pietro Clemens, O. Carm. † | Bishop of Ales e Terralba, Italy |
| unknown | | Juan d’Espinar † | Prelate of Santa Lucia del Mela, Italy |
| unknown | | Domingo de Ulloa, O.P. † | Bishop of Michoacán, México |
| unknown | | Michael Fitzwalter † | Bishop of Kerry (o Ardfert) e Aghadoe, Ireland |
| unknown | | Marcel de Lorenzi † | Bishop of Strongoli, Italy |
| unknown | | João Ribeiro Gaio † | Bishop of Malacca, Singapore |
| unknown | | Annibal de Ruccellai (Oricellari) † | Bishop of Carcassonne, France |
| unknown | | Achille Sergardi † | Bishop of Massa Marittima, Italy |
| unknown | | Tommaso Sirleto † | Bishop of Squillace, Italy |
| unknown | 79.0 | Gianfrancesco Sormani † | Bishop of Montefeltro, Italy |
| 3 Jan | | Alberto Drago, O.P. † | Bishop of Termoli, Italy |
| 3 Jan | 52.0 | Peter von Rascher † | Bishop of Chur, Switzerland |
| 10 Jan | 56.0 | Alessandro de Franceschi, O.P. † | Bishop Emeritus of Forli, Italy |
| 20 Jan | | Thomas Strong † | Auxiliary Bishop of Santiago de Compostela, Spain |
| 29 Jan | | Pedro Jaime † | Bishop of Albarracin, Spain |
| 26 Feb | | Horace René de Birague † | Bishop of Lavaur, France |
| 3 Mar | | Louis du Moulinet † | Bishop Emeritus of Sées {Séez}, France |
| 4 Mar | | Gentile Dolfino † | Bishop of Camerino, Italy |
| 10 Mar | | Massimiliano Beniamino, O.F.M. Conv. † | Bishop of Chioggia, Italy |
| 11 Mar | | Vincenzo Bonardo, O.P. † | Bishop of Gerace, Italy |
| 15 Mar | | Raymond O’Gallagher † | Bishop of Derry, Ireland |
| 17 Mar | 41.2 | Lorenz Eiszepf † | Auxiliary Bishop of Eichstätt, Germany |
| 5 Apr | 63.2 | Wolfgang Kämmerer von Dalberg † | Archbishop of Mainz, Germany |
| 12 Apr | 81.2 | Girolamo Bentivoglio † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| 6 May | | Properzio Resta, O.F.M. Conv. † | Bishop of Cariati e Cerenzia, Italy |
| 15 May | 62.7 | Claude d’Angennes † | Bishop of Le Mans, France |
| 18 May | 65.3 | Pietro Ridolfi, O.F.M. Conv. † | Bishop of Senigallia, Italy |
| 31 May | 53.5 | Gebhard Truchseß von Waldburg † | Former Archbishop-Elect of Köln {Cologne}, Germany |
| 23 Jun | | Salvat d’Iharse † | Bishop of Tarbes, France |
| 15 Aug | 72.6 | Diego Gómez de Lamadrid, O.SS.T. † | Bishop of Badajoz, Spain |
| 23 Aug | 66.8 | Francisco Reinoso Baeza † | Bishop of Córdoba, Spain |
| 7 Oct | | Miguel Espinosa † | Auxiliary Bishop of Valencia, Spain |
| Nov | | Ludovico Martelli † | Bishop of Chiusi, Italy |
| 11 Nov | | Juan de Castro, O.S.B. † | Archbishop of Taranto, Italy |
| 16 Nov | 56.8 | János Kutasy † | Archbishop of Esztergom, Hungary |
| 29 Nov | 40.9 | Guillaume Le Blanc † | Bishop of Vence, France |
| 31 Dec | | Juan García † | Bishop of Almería, Spain |