Peter III
# Peter III

Peter III may refer to:

## Politics

* Peter III of Bulgaria (ruled in 1072)
* Peter III of Aragon (1239–1285)
* Peter III of Arborea (died 1347)
* Peter III Aaron (died 1467)
* Pedro III of Kongo (ruler in 1669)
* Peter III of Russia (1728–1762)
* Peter III of Portugal (1717–1786)
* Peter III (cat) (1947-1964)

## Religion

* Pope Peter III of Alexandria (477–489)
* Peter III of Raqqa, Syriac Orthodox Patriarch of Antioch in 581–591
* Peter III (bishop of Lugo) (r. from 1113 until 1133)
* Peter III, Pope Peter III of the schismatic Palmarian Catholic Church
