The 1264–65 papal election (12 October 1264 – 5 February 1265) was convened after the death of Pope Urban IV and ended by electing his successor Pope Clement IV. It met in Perugia, where Urban IV had taken refuge after being driven out of Orvieto. He had never been in Rome as Pope, but spent his entire reign in exile. It was the second election in a row where a pope was elected in absentia; the phenomenon would be repeated in the Conclave of 1268–1271, and again in the Conclave of 1292–1294. In the last two cases, the person elected was not even a Cardinal.

According to Salimbene di Adam, the archbishop of Ravenna, Filippo da Pistoia, had hopes of being elected.^[1]

At the time of Pope Urban's death there were twenty-one cardinals.^[2] At least two did not attend the Election, Cardinal Simon de Brion, Legate to King Philip III of France, and Cardinal Guido Grosso Fulcodi, Legate to King Henry III. Cardinal Simon Paltineri, governor of Campania for Urban IV and later for Clement IV, might or might not have attended.^[3]