List of popes by age
This is a list of ages of popes.
Ages of popes
Youngest popes
The information to determine the age of the youngest popes upon election is frequently unavailable, as many popes have completely unknown dates of birth. The probable youngest popes are:Three of these were members of the Theophylacti family that dominated Roman politics during the 10th century. This period is known to historians as the saeculum obscurum.
Ten oldest popes at election (post-1295)
| Pope | Year elected | Elected at age | Age at death or resignation | Length of pontificate |
| Clement X | 1670 | 79 years, 290 days | 86 | 6 years, 84 days |
| Alexander VIII | 1689 | 79 years, 177 days | 80 | 1 year, 118 days |
| Paul IV | 1555 | 78 years, 330 days | 83 | 4 years, 87 days |
| Clement XII | 1730 | 78 years, 100 days | 87 | 9 years, 209 days |
| Benedict XVI | 2005 | 78 years, 3 days | 85 / today | 7 years, 315 days |
| John XXIII | 1958 | 76 years, 337 days | 81 | 4 years, 218 days |
| Innocent XII | 1691 | 76 years, 124 days | 85 | 9 years, 77 days |
| Callixtus III | 1455 | 76 years, 98 days | 79 | 3 years, 120 days |
| Francis | 2013 | 76 years, 86 days | Current / today | ≥ |
| Benedict XIII | 1724 | 75 years, 91 days | 81 | 5 years, 268 days |