| Date | Age | Bishop | Title |
| unknown | | Pompeo Belli † | Bishop of Bisignano, Italy |
| unknown | | Annibale Cotugno (Cataneo) † | Bishop of Telese o Cerreto Sannita, Italy |
| unknown | | Hnan-Jesu † | Archbishop of Mardin (Chaldean), Turkey |
| unknown | | Donato Laurenti † | Bishop of Ariano, Italy |
| unknown | | Giovanni Manca † | Bishop of Ales e Terralba, Italy |
| unknown | 84.0 | François Mangeard † | Auxiliary Bishop of Langres, France |
| unknown | | Filippo Mazzola † | Bishop of Capri, Italy |
| unknown | | Marcantonio Pescara † | Archbishop of Conza, Italy |
| unknown | 68.0 | Juan Redín Cruzat † | Bishop of Tarazona, Spain |
| unknown | | Luigi Serristori † | Bishop of Bitetto, Italy |
| unknown | | Aurelio Tribaldeschi (Sibaldeschi), O.S.Io.Hieros. † | Bishop of Ferentino, Italy |
| unknown | | Sigismond von Arzt † | Bishop-Elect of Seckau, Austria |
| 5 Jan | 74.0 | Gaspar de Torres, O. de M. † | Auxiliary Bishop of Sevilla {Seville}, Spain |
| 15 Jan | | Guarnerio Trotti † | Bishop of Alessandria (della Paglia), Italy |
| 2 Feb | 86.0 | Pedro del Frago Garcés † | Bishop of Huesca, Spain |
| 9 Feb | 71.1 | Mathurin de la Saussaye † | Bishop of Orléans, France |
| 22 Feb | | Gianfranco Carducci † | Bishop of Lacedonia, Italy |
| 28 Feb | | Cristoforo Scotti † | Bishop of Cavaillon, France |
| 4 Mar | 56.3 | Aleksander Mieliński, C.R.S.A. † | Bishop-Elect of Wenden (Windau), Poland |
| 13 Mar | | Baldassarre Giustiniani † | Bishop of Venosa, Italy |
| 16 Mar | | Georg Agricola † | Bishop of Seckau, Austria |
| 17 Mar | | Troilo Boncompagni † | Bishop of Foligno, Italy |
| 9 Apr | 72.2 | Filippo Maria Campeggi † | Bishop of Feltre, Italy |
| 10 Apr | 72.2 | Nicolas Bousmard † | Bishop of Verdun, France |
| 15 Apr | 60.2 | Jan Borukowski † | Bishop of Przemyśl, Poland |
| 18 Apr | | René de Salla, C.R.S.A. † | Bishop of Luçon, France |
| 1 May | 54.9 | Giovanni Delfino † | Bishop of Brescia, Italy |
| 10 May | 67.2 | Luigi Cornaro † | Cardinal, Archbishop Emeritus of Zadar (Zara), Croatia |
| 29 May | 56.4 | Paul de Foix de Carmaing † | Archbishop of Toulouse, France |
| 10 Jun | 69.4 | Biagio (Blaž) Sideneo (Sidineo) † | Bishop of Arbe (Rab), Croatia |
| 14 Jun | 50.4 | Claude de La Baume † | Cardinal, Archbishop of Besançon, France |
| 20 Jun | 54.4 | Bl. Dermot O’Hurley † | Archbishop of Cashel, Ireland |
| 9 Aug | 74.6 | Gaspar do Casal, O.S.A. † | Bishop of Coimbra, Portugal |
| 15 Sep | | Antoine Senneterre † | Bishop of Clermont, France |
| 18 Sep | 59.7 | Francesco Bossi † | Bishop of Novara, Italy |
| 23 Sep | | Jean-Baptiste Raimbaud de Simiane † | Bishop Emeritus of Apt, France |
| 27 Sep | | Thomas Watson † | Bishop Emeritus of Lincoln, England, Great Britain |
| 30 Sep | | Gergely Bornemissza † | Bishop of Oradea Mare {Gran Varadino, Nagyvárad}, Romania |
| 6 Oct | 99.7 | Juan Suárez Carvajal † | Bishop Emeritus of Lugo, Spain |
| 12 Oct | 68.7 | Francisco Antonio Orantes Vélez, O.F.M. Obs. † | Bishop of Oviedo, Spain |
| 3 Nov | 46.0 | St. Charles Borromeo † | Cardinal, Archbishop of Milano {Milan}, Italy |
| 3 Nov | | János Monoszlóy † | Bishop of Zagreb (Agram), Croatia |
| 1 Dec | | Pietro Querini † | Bishop of Concordia (Sagittaria), Italy |
| 26 Dec | 61.7 | Gianfrancesco Commendone † | Cardinal, Bishop Emeritus of Cefalonia e Zante, Greece |