| Date | Age | Bishop | Title |
| unknown | | Ascanio Albertini † | Bishop of Avellino e Frigento, Italy |
| unknown | | Giovanni Paolo Amanio † | Bishop of Anglona-Tursi, Italy |
| unknown | | Antonio Balducci, O.P. † | Bishop of Trevico, Italy |
| unknown | | Ippolito Capilupo † | Bishop Emeritus of Fano, Italy |
| unknown | | Pietro Cancellieri (Cavalieri) † | Bishop of Lipari, Italy |
| unknown | | Pedro de Agreda (Sánchez Martín), O.P. † | Bishop of Coro, Venezuela |
| unknown | | Pietro Francesco Ferri † | Bishop of Polignano (Polinianum), Italy |
| unknown | | Ferdinando Ferrero Fieschi † | Bishop of Ivrea, Italy |
| unknown | | Vincenzo Fucheri † | Bishop of Corneto (Tarquinia) e Montefiascone, Italy |
| unknown | 40.7 | Sebastian Haidlauf † | Auxiliary Bishop of Freising, Germany |
| unknown | | Francesco Indelli † | Bishop of Guardialfiera (Guardia), Italy |
| unknown | | Lancillotto Lancellotti † | Archbishop of Rossano, Italy |
| unknown | | Ascanio Marchesini † | Bishop of Calvi Risorta, Italy |
| unknown | | Pietro de Petris † | Bishop of Lucera, Italy |
| unknown | | Gonzalo de Solórzano † | Bishop of Oviedo, Spain |
| 1 Jan | 63.0 | Wojciech Staroźrebski Sobiejuski † | Bishop of Przemyśl, Poland |
| 14 Jan | 80.0 | Juan Solano, O.P. † | Bishop Emeritus of Cuzco, Peru |
| 18 Jan | 63.3 | Archangelo de’ Bianchi (Blanca), O.P. † | Cardinal, Bishop Emeritus of Teano, Italy |
| 25 Jan | | Pierre de Châtelet † | Bishop of Toul, France |
| 31 Jan | 68.0 | Henrique de Portugal † | Cardinal, Archbishop Emeritus of Évora, Portugal |
| 31 Jan | | Dietrich von Rothenstein † | Bishop of Worms, Germany |
| 15 Feb | 49.1 | Cunerus Petri † | Bishop of Leeuwarden, Netherlands |
| 11 Mar | | Thomas O’Herlihy † | Bishop of Ross, Ireland |
| 23 Mar | | Augustinus Le Cirier † | Bishop of Avranches, France |
| 4 Apr | | Manuel de Mercado Aldrete, O.S.H. † | Bishop of Panamá |
| 20 Apr | 58.2 | Francesco Alciati † | Cardinal, Bishop of Civitate (Cittŕ or Civita), Italy |
| 26 Apr | | Alfonso Binarini † | Bishop of Camerino, Italy |
| 26 Apr | 40.3 | Jakob Feucht † | Auxiliary Bishop of Bamberg, Germany |
| 20 Jun | | Roland de Burgo (Burke) † | Bishop of Clonfert, Ireland |
| 22 Jun | | Jean de Bours † | Bishop of Laon, France |
| 8 Jul | | Francisco Tello Sandoval † | Bishop of Plasencia, Spain |
| 15 Jul | 70.5 | Nicolaas van Nieuwland † | Bishop Emeritus of Haarlem, Netherlands |
| 20 Aug | | Jerónimo Osório † | Bishop of Faro {Algarve}, Portugal |
| 21 Aug | | Marcantonio del Giglio † | Bishop of Forli, Italy |
| 25 Aug | 77.6 | Frederik Schenck van Toutenburg † | Archbishop of Utrecht, Netherlands |
| 27 Aug | | Alessio Stradella, O.S.A. † | Bishop of Nepi e Sutri, Italy |
| 7 Sep | | Johann Georg Zobel von Giebelstadt † | Bishop-Elect of Bamberg, Germany |
| 18 Sep | | Laurentius Metsius † | Bishop of ’s Hertogenbosch (Bois-le-Duc), Netherlands |
| 22 Sep | 78.2 | Cristóbal Rojas Sandoval † | Archbishop of Sevilla {Seville}, Spain |
| 1 Dec | 71.9 | Giovanni Gerolamo Moroni (Morone) † | Cardinal, Cardinal-Bishop of Ostia (e Velletri) |
| 23 Dec | 64.0 | Gerard van Groesbeeck † | Cardinal, Bishop of Ličge, Belgium |