Pope Gregory has been the name of sixteen Roman Catholic Popes and two Antipopes:

1. Pope Gregory I, also called Gregory the Great
2. Pope Gregory II
3. Pope Gregory III
4. Pope Gregory IV
5. Pope Gregory V
6. Pope Gregory VI
   • Antipope Gregory VI
7. Pope Gregory VII, Hildebrand
8. Pope Gregory VIII
   • Antipope Gregory VIII
9. Pope Gregory IX
10. Pope Gregory X
11. Pope Gregory XI
12. Pope Gregory XII
13. Pope Gregory XIII, responsible for the Gregorian calendar
14. Pope Gregory XIV
15. Pope Gregory XV
16. Pope Gregory XVI

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