Papal conclave, 1378 Cardinal electors Cardinal electors

| Elector | Nationality | Cardinalatial_order_and_title | Elevated | Elevator |
|---|---|---|---|---|
| Pietro Corsini | Florentine | Cardinal-bishop of Porto e Santa Rufina | 1370, June 7 | Urban V |
| Jean du Cros | French | Cardinal-bishop of Palestrina | 1371, May 30 | Gregory XI |
| Guillaume d`Aigrefeuille, iuniore , O.S.B. | French | Cardinal-priest of S. Stefano al Monte Celio | 1367, May 12 | Urban V |
| Francesco Tebaldeschi | Roman | Cardinal-priest of S. Sabina | 1368, September 22 | Urban V |
| Bertrand Lagier , O.F.M. | French | Cardinal-priest of S. Cecilia | 1371, May 30 | Gregory XI |
| Robert de Genève | French | Cardinal-priest of Ss. XII Apostoli | 1371, May 30 | Gregory XI |
| Simone Borsano | Milanese | Cardinal-priest of Ss. Giovanni e Paolo | 1375, December 20 | Gregory XI |