| Papal conclave May 1555 | |
|---|---|
| Dates and location | |
| 15–23 May 1555 Apostolic Palace, Papal States | |
| Key officials | |
| Dean | Giovanni Pietro Carafa |
| Camerlengo | Guido Ascanio Sforza di Santa Fiora |
| Protopriest | Claude de Longwy de Givry |
| Protodeacon | Francesco Pisani |
| Elected pope | |
| Giovanni Pietro Carafa Name taken: Paul IV | |
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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.