| Date | Age | Bishop | Title |
| unknown | | Antonio Attilio † | Bishop of Termoli, Italy |
| unknown | | Agostino Ferrero † | Bishop of Vercelli, Italy |
| unknown | | Giovanni Francesco de Marellis † | Bishop of Minervino Murge, Italy |
| unknown | | Thomas Murner, O.F.M. † | Auxiliary Bishop of Passau, Germany |
| unknown | | Federico Petrucci † | Bishop of Gallipoli, Italy |
| unknown | | Marco Antonio Prioldo † | Bishop of Castellaneta, Italy |
| unknown | | Scipione Roero † | Bishop of Asti, Italy |
| unknown | | Gerolamo Sansoni † | Bishop of Lodi, Italy |
| unknown | | Robert Sherborne † | Bishop of Chichester, England, Great Britain |
| unknown | | Defendente Valaresso † | Bishop of Capodistria (Capo d'Istria)(Koper), Slovenia |
| 11 Feb | 55.1 | Johannes Reuther, O. Carm. † | Auxiliary Bishop of Würzburg, Germany |
| 29 Mar | | Francisco Mendoza † | Bishop of Palencia, Spain |
| 27 Apr | | Francisco de Mello † | Bishop of Goa, India |
| May | 51.3 | Venerable Diego Alvarez de Osorio † | Bishop-Elect of León en Nicaragua |
| 7 May | | Christophorus Radelennes, O.P. † | Auxiliary Bishop of Bremen (and Hamberg), Germany |
| 12 May | 51.4 | Detlev Reventlow † | Bishop-Elect of Lübeck, Germany |
| Sep | | Giovanni Battista Casale † | Bishop of Belluno, Italy |
| 1 Sep | | Luigi Caracciolo † | Bishop of Catania, Italy |
| 2 Sep | | Pietro Andrea Ripanti † | Bishop of Oppido Mamertina, Italy |
| 13 Oct | | François de Rohan † | Archbishop of Lyon, France |
| Nov | | Filippo Adimari † | Titular Archbishop of Nazareth |
| 3 Nov | 80.6 | Sigismondo Pappacoda † | Bishop of Tropea, Italy |