Papal election, 1287–88 Cardinal electors Cardinal electors

| Elector | Nationality | Order_ | Title | Elevated | Elevator |
|---|---|---|---|---|---|
| Matteo Orsini Rosso | Roman | Cardinal-deacon | Deacon of S. Maria in Portico | May 22, 1262 | Urban IV |
| Giacomo Colonna | Roman | Cardinal-deacon | Deacon of S. Maria in Via Lata | March 12, 1278 | Nicholas III |
| Benedetto Caetani, seniore | Anagni | Cardinal-deacon | Deacon of S. Nicola in Carcere Tulliano | April 12, 1281 | Martin IV |
| Goffredo da Alatri † | Alatri | Cardinal-deacon | Deacon of S. Giorgio in Velabro | December 17, 1261 | Urban IV |
| Giordano Orsini † | Roman | Cardinal-deacon | Deacon of S. Eustachio | March 12, 1278 | Nicholas III |
| Hugh of Evesham † | English | Cardinal-priest | Title of S. Lorenzo in Lucina | April 12, 1281 | Martin IV |