The following flags represent the Vatican, Papal States or one of its predecessors. These flags can be used as is or as inspiration.
OTL[]
Flag of Vatican City (2023 to present)
Flag of Vatican City (2001 to 2023)
2:3 variant of the Flag of Vatican City
Flag of the Roman Republic (1849)
Merchant flag of the Papal States. Adopted on 17 September 1825. Also used as a state flag on land (1825–1849, 1849–1870)
Flag of the Papal States 1808-1870
Flag of the Papal States prior to 1808
Merchant flag of the Papal States. In use since 1803, officially adopted on 7 June 1815 (1803-1825)
Flag of the Holy See in Nouveau Petite Larousse Illustré, 1924
ATL[]