| Date | Age | Bishop | Title |
| unknown | | Vincenzo Bassi † | Bishop of Andria, Italy |
| unknown | | Francesco Bonfiglio, O.F.M. Conv. † | Bishop of Ascoli Satriano, Italy |
| unknown | 55.0 | Silvestro Branconi † | Bishop of Montemarano, Italy |
| unknown | | Giulio Cesare Carafa † | Bishop of Ostuni, Italy |
| unknown | | Lorenzo Celsi † | Bishop of Castro, Italy |
| unknown | | Orazio Ciceroni † | Bishop of Ferentino, Italy |
| unknown | | Cosimo de Angelis † | Bishop of Cortona, Italy |
| unknown | | Andrea de Franchis † | Archbishop of Trani, Italy |
| unknown | | Juan Antonio Diaz de Salcedo, O.F.M. † | Bishop of León en Nicaragua |
| unknown | | Orazio Montani (Montano) † | Archbishop of Arles, France |
| unknown | 100.0 | Eugene Thadaeus O’Harte, O.P. † | Bishop of Achonry, Ireland |
| unknown | | Alfonso Pardo † | Bishop of Trevico, Italy |
| unknown | | Flaminio Parisio † | Bishop of Bitonto, Italy |
| unknown | | Michele Priuli † | Bishop of Vicenza, Italy |
| unknown | | Bartolomeu Simões Pereira † | Prelate Emeritus of São Sebastião do Rio de Janeiro, Brazil |
| unknown | | Ferdinando Spinelli † | Bishop of Policastro, Italy |
| 4 Jan | | Leonardo Vairo, O.S.B. † | Bishop of Pozzuoli, Italy |
| 14 Feb | 62.3 | Alfonso Gesualdo di Conza (Gonza) † | Cardinal, Archbishop of Napoli {Naples}, Italy |
| 25 Feb | | Giulio Ottinelli † | Bishop of Fano, Italy |
| Mar | 67.2 | Carlos Muñoz Serrano † | Bishop of Barbastro, Spain |
| May | 63.3 | Andrés de Ubilla, O.P. † | Bishop of Michoacán, México |
| 30 May | 57.4 | Orazio Moroni † | Bishop of Nepi e Sutri, Italy |
| 8 Jun | 83.4 | Stanisław Karnkowski † | Archbishop of Gniezno, Poland |
| 14 Jun | 66.5 | Girolamo Rusticucci † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |
| 27 Jun | | Jan Dymitr Solikowski † | Archbishop of Lviv, Ukraine |
| 10 Jul | | Juan Terés † | Archbishop of Tarragona, Spain |
| 16 Aug | 62.6 | Silvio Antoniano † | Cardinal, Cardinal-Priest of S. Salvatore in Lauro |
| 1 Sep | 52.2 | Bonviso Bonvisi † | Cardinal, Archbishop of Bari (-Canosa), Italy |
| 11 Sep | | Horace Montano † | Archbishop of Arles, France |
| 3 Oct | | Cristoforo Boncompagni † | Archbishop of Ravenna, Italy |
| 9 Oct | 53.8 | Germanico Malaspina † | Bishop of San Severo, Italy |
| 20 Oct | 45.8 | Marco Agrippa Dandini † | Bishop of Jesi, Italy |
| 2 Nov | 53.8 | José (Giuseppe) Esteve Juan (Stefano) † | Bishop of Orihuela, Spain |
| 9 Nov | 55.9 | Alonso D’Avalos † | Auxiliary Bishop of Valencia, Spain |
| 6 Dec | 52.9 | Tommaso Zerula † | Bishop of Minori, Italy |
| 8 Dec | 56.8 | Girolamo Mattei † | Cardinal, Cardinal-Priest of S. Pancrazio |
| 17 Dec | | Antonio Maria Manzolio † | Bishop Emeritus of Gravina (di Puglia), Italy |
| 22 Dec | | Tommaso de Bonsi † | Bishop Emeritus of Béziers, France |