May 1555 conclave

Papal conclave
May 1555
Dates and location
15–23 May 1555
Apostolic Palace, Papal States
Key officials
DeanGian Pietro Carafa
CamerlengoGuido Ascanio Sforza
ProtopriestClaude de Longwy
ProtodeaconFrancesco Pisani
Elected pope
Gian Pietro Carafa
Name taken: Paul IV

The May 1555 papal conclave (15–23 May) was convened on the death of Pope Marcellus II (whose reign had only lasted from 9 April to 1 May that year) and elected Pope Paul IV as his successor.