Popes with The Longest Reigns

Below is a list of the longest serving popes.

1. Saint Peter (30–64 or 67): 34 or 37 years.
   Pope Saint Peter is the longest serving pope in the complete history of the Papacy.
   
   
2. Pius IX (1846–1878): 31 years, 7 months and 23 days (11,560 days).
   
   
3. Saint John Paul II (1978–2005): 26 years, 5 months and 17 days (9,665 days)
   
   
4. Leo XIII (1878–1903): 25 years, 5 months and 1 day (9,281 days).
   
   
5. Pius VI (1775–1799): 24 years, 6 months and 15 days (8,962 days).
   
   
6. Adrian I (772–795): 23 years, 10 months and 25 days (8,729 days).
   
   
7. Pius VII (1800–1823): 23 years, 5 months and 7 days (8,560 days).
   
   
8. Alexander III (1159–1181): 21 years, 11 months and 24 days (8,029 days).
   
   
9. St. Sylvester I (314–335): 21 years, 11 months and 1 day (8,005 days).
   
   
10. St. Leo I (440–461): 21 years, 1 month, and 13 days. (7,713 days).
    
    
11. Urban VIII (1623–1644): 20 years, 11 months and 24 days (7,664 days).