| Date | Age | Bishop | Title |
| unknown | 75.0 | Giovanni Giacomo (Jean Jacques) Barba, O.S.A. † | Bishop of Terni, Italy |
| unknown | | Giovanni Beraldo † | Bishop of Sant’Agata de’ Goti, Italy |
| unknown | | Louis (Jacob) de Bourbon (de Helvis) † | Bishop of Langres, France |
| unknown | | Giacomo Cocco † | Archbishop of Corfù, Greece |
| unknown | | Ferdinando D’Anna † | Bishop of Bovino, Italy |
| unknown | | Bernardino della Croce, B. † | Bishop Emeritus of Como, Italy |
| unknown | | Angelo Gaconia † | Bishop of Castro di Puglia, Italy |
| unknown | | Domenico di Grammatica † | Bishop of Santorini {Thira}, Greece |
| unknown | | Marek Khuen z Olomouce † | Bishop of Olomouc (Olmütz), Czech Republic |
| unknown | | Antonio Lunello † | Bishop of Gaeta, Italy |
| unknown | | Alessandro Mollo (Moro) † | Bishop of Minori, Italy |
| unknown | | Benedetto Nerli † | Bishop of Volterra, Italy |
| unknown | | Geronimo Sifola † | Bishop of Bisceglie, Italy |
| unknown | | Juan de Vaca (Baca), O.S.B. † | Bishop of Panamá |
| unknown | | Matteo Zacconi † | Bishop of Strongoli, Italy |
| 2 Jan | 57.0 | Henry Sinclair † | Bishop of Ross (Rosemarkie, Fortrose), Scotland, Great Britain |
| 28 Jan | 64.6 | Federico Cesi † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 21 Feb | 25.1 | Federico Gonzaga † | Cardinal, Bishop-Elect of Mantova, Italy |
| 14 Mar | 85.2 | Vasco de Quiroga † | Bishop of Michoacán, México |
| 13 Apr | 58.3 | Bernardo Navagero † | Cardinal, Former Administrator of Verona, Italy |
| 2 May | 60.3 | Acisclo de Moya y Contreras † | Archbishop of Valencia, Spain |
| 4 May | | Thomas Planta † | Bishop of Chur, Switzerland |
| 21 May | | Paweł Tarło † | Archbishop of Lviv, Ukraine |
| 19 Jun | | Antonio Bernardo de Mirandola † | Bishop Emeritus of Caserta, Italy |
| 30 Jul | | Toussaint de Hossey † | Bishop of Toul, France |
| 29 Aug | 25.1 | Alfonso Carafa † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 4 Sep | | Eustache du Bellay † | Bishop Emeritus of Paris, France |
| 5 Sep | 72.8 | Simone Pasqua (di Negro) † | Cardinal, Bishop of Luni e Sarzana, Italy |
| 8 Sep | | Diego de los Cobos Molina † | Bishop of Jaén, Spain |
| 22 Sep | | François de Faucon † | Bishop of Carcassonne, France |
| Oct | | Diego Enríquez de Almansa † | Bishop of Coria, Spain |
| 6 Oct | 44.7 | Annibale Bozzuti † | Cardinal, Archbishop Emeritus of Avignon, France |
| 6 Oct | 68.8 | Pietro Paolo Vergerio † | Bishop Emeritus of Capodistria (Capo d’Istria)(Koper), Slovenia |
| 29 Oct | 35.2 | Ranuccio Farnese, O.S.Io.Hieros. † | Cardinal, Cardinal-Bishop of Sabina |
| 12 Nov | 42.9 | Carlo Visconti † | Cardinal, Bishop of Montefeltro, Italy |
| 9 Dec | 66.7 | Giovanni Angelo de’ Medici † | Pope (Roma {Rome}, Italy) |