| Date | Age | Bishop | Title |
| unknown | | Achilles † | Bishop of Pécs, Hungary |
| unknown | | Scambio Aliotti † | Bishop of Viterbo e Tuscania, Italy |
| unknown | | Guglielmo Braida † | Bishop of Alba (Pompea), Italy |
| unknown | | Ruggero Calcagnini, O.P. † | Bishop of Castro [del Lazio], Italy |
| unknown | | Giovanni di Cogorno † | Archbishop of Genova, Italy |
| unknown | | Gilbert † | Bishop of Whithorn-Galloway, Scotland, Great Britain |
| unknown | | Giovanni † | Bishop of Veroli, Italy |
| unknown | | Riccardo Grizzetta, O.F.M. † | Bishop of Cefalù, Italy |
| unknown | | Gualtiero † | Bishop of Akka [San Giovanni d’Acri; Tolemaide], Syria |
| unknown | | Simon de Gunby † | Bishop of Moray, Scotland, Great Britain |
| unknown | | Nikolaus von Nauen † | Archbishop of Riga, Latvia |
| unknown | | Randal † | Bishop of Down, Ireland |
| unknown | | Raniero † | Bishop of Terni, Italy |
| 13 Jan | | Johann von Diepholz † | Bishop of Minden, Germany |
| 9 Feb | | Bogufal (Boguchfal) † | Bishop of Poznań, Poland |
| 17 Feb | | Guillaume de Sainte-Mère-Eglise † | Bishop of Avranches, France |
| 2 Mar | | David MacKelly, O.P. † | Archbishop of Cashel, Ireland |
| 1 Apr | | Anselin de Pomard † | Bishop of Autun, France |
| 3 Apr | | Richard Wych † | Bishop of Chichester, England, Great Britain |
| 26 Apr | | David de Berhnam † | Bishop of Saint Andrews, Scotland, Great Britain |
| 25 May | | Pierre de Colmieu † | Cardinal, Cardinal-Bishop of Albano |
| 11 Jun | | William de Burgh † | Bishop of Llandaff, Wales, Great Britain |
| 22 Jun | | Gilla Kelly O’Ruadhain † | Bishop of Killala, Ireland |
| 4 Sep | | Benaudito † | Bishop of Perugia, Italy |
| 14 Sep | | Ulrich von Ortenburg † | Bishop of Gurk, Austria |
| 10 Oct | 78.7 | Robert Grosteste † | Bishop of Lincoln, England, Great Britain |
| 18 Oct | | Azzone da Torbiato † | Bishop of Brescia, Italy |
| 31 Oct | | Wilhelm † | Bishop Emeritus of Kammin (Camin), Germany |
| 19 Nov | | Giacomo da Castell’Arquato † | Cardinal, Cardinal-Bishop of Porto e Santa Rufina |