Peter IV
# Peter IV

Peter IV may refer to:

* Pope Peter IV of Alexandria (ruled 565–569)
* Patriarch Peter IV of Alexandria (ruled 643–651)
* Peter IV of Ravenna (927–971)
* Peter IV of Bulgaria (ruled 1185–1197)
* Peter IV of Aragon (1319–1387)
* Peter IV of Portugal (I of Brazil) (1798–1834)
* Ignatius Peter IV, Syriac Orthodox Patriarch of Antioch in 1872–1894
