Papal election, September 1276 Cardinal electors Cardinal electors

| Elector | Nationality | Order_and_title | Elevated | Elevator |
|---|---|---|---|---|
| João Pedro Julião | Portuguese | Cardinal-Bishop of Frascati | June 3, 1273 | Gregory X |
| Bertrand de Saint-Martin O.S.B. | French | Cardinal-Bishop of Sabina | June 3, 1273 | Gregory X |
| Simone Paltineri | n Padua | Cardinal-priest of Ss. Silvestro e Martino | December 17, 1261 | Urban IV |
| Anchero Pantaleone | French | Cardinal-priest of S. Prassede | May 1262 | Urban IV |
| Guillaume de Bray | French | Cardinal-priest of S. Marco | May 1262 | Urban IV |
| Riccardo Annibaldi | Roman | Cardinal-deacon of S. Angelo in Pescheria | 1238 | Gregory IX |
| Giovanni Gaetano Orsini | Roman | Cardinal-deacon of S. Nicola in Carcere Tulliano | May 28, 1244 | Innocent IV |