| Date | Age | Bishop | Title |
| unknown | | Sulpizio Costantino † | Bishop of Nocera de’ Pagani, 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 † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| unknown | | Guillaume Le Blanc † | Bishop of Grasse, France |
| unknown | | Marcellus de Lorenzi † | Bishop of Strongoli, Italy |
| unknown | | Ludovico Martelli † | Bishop of Chiusi, Italy |
| unknown | | João Ribeiro Gaio † | Bishop of Malacca, Singapore |
| unknown | | Annibal de Ruccellai † | Bishop of Carcassonne, France |
| unknown | | Achille Sergardi † | Bishop of Massa Marittima, Italy |
| unknown | | Tommaso Sirleto † | Bishop of Squillace, Italy |
| unknown | | Gianfrancesco Sormani † | Bishop of Montefeltro, Italy |
| 3 Jan | | Alberto Drago, O.P. † | Bishop of Termoli, Italy |
| 10 Jan | 67.0 | 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 |
| 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 |
| 17 Mar | 41.2 | Lorenz Eiszepf † | Auxiliary Bishop of Eichstätt, Germany |
| 5 Apr | 63.3 | Wolfgang Kämmerer von Dalberg † | Archbishop of Mainz, Germany |
| 12 Apr | | 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 de Rambouillet † | Bishop of Le Mans, France |
| 18 May | | Pietro Ridolfi, O.F.M. Conv. † | Bishop of Senigallia, Italy |
| 31 May | 53.6 | Gebhard Truchseß von Waldburg † | Former Archbishop-Elect of Köln {Cologne}, Germany |
| 3 Jun | | Peter von Rascher † | Bishop of Chur, Switzerland |
| 15 Aug | 72.6 | Diego Gómez de Lamadrid, O.SS.T. † | Bishop of Badajoz, Spain |
| 23 Aug | 66.9 | Francisco Reinoso Baeza † | Bishop of Córdoba, Spain |
| 7 Oct | | Miguel Espinosa † | Auxiliary Bishop of Valencia, Spain |
| 11 Nov | | Juan de Castro, O.S.B. † | Archbishop of Taranto, Italy |
| 16 Nov | | János Kutasy † | Archbishop of Esztergom, Hungary |
| 31 Dec | | Juan García † | Bishop of Almería, Spain |