- Source: Patriarch Peter I
- Konsili Nikea I
- Konstantinus Agung
- Paus Yohanes Paulus I
- Bartolomeus I dari Konstantinopel
- Wangsa Romanov
- Paus Fransiskus
- Paus (Gereja Katolik)
- Daftar aktivis lingkungan
- Hubungan Gereja Katolik dengan Ortodoks Timur
- Rusia
- Patriarch Peter I
- Peter I of Alexandria
- Patriarch Peter
- Patriarch of Antioch
- Patriarch of Moscow and all Rus'
- Ecumenical Patriarch Bartholomew of Constantinople
- Syriac Orthodox Patriarch of Antioch and All the East
- List of Maronite patriarchs of Antioch
- Patriarch Peter of Alexandria
- List of Syriac Orthodox patriarchs of Antioch
Patriarch Peter I may refer to:
Patriarch Peter I of Alexandria, Greek Patriarch of Alexandria in 300–311
Peter of Constantinople, Patriarch of Constantinople in 654–666