Patriarch Gregory

Patriarch Gregory or Catholicos Gregory may refer to:

Constantinople

• Gregory of Nazianzus, Patriarch in 379–381
• Gregory II of Constantinople, Patriarch in 1283–1289
• Gregory III of Constantinople, Patriarch in 1443–1450
• Gregory IV of Constantinople, Patriarch in 1623
• Gregory V of Constantinople, Patriarch in 1797–1798, 1806–1808 and 1818–1821
• Gregory VI of Constantinople, Patriarch in 1835–1840
• Gregory VII of Constantinople, Patriarch in 1923–1924

Alexandria

• Patriarch Gregory of Cappadocia, Patriarch in 339-345
• Patriarch Gregory I of Alexandria, Patriarch in 1243–1263
• Patriarch Gregory II of Alexandria, Patriarch in 1316–1354
• Patriarch Gregory III of Alexandria, Patriarch in 1354–1366
• Patriarch Gregory IV of Alexandria, Patriarch in 1398–1412
• Patriarch Gregory V of Alexandria, Patriarch in 1484–1486

Bulgaria

• Gregory of Bulgaria, Patriarch c. 940 – c. 960

Armenian Apostolic Church

• Gregory the Illuminator (c. 257 – c. 331), patron saint and first official head of the Armenian Apostolic Church
• Grigoris (catholicos), 4th-century catholicos of Caucasian Albania and martyr
• Gregory II the Martyrophile (1066–1105)
• Grigor III Pahlavuni (1093–1166), Catholicos Gregory III of Cilicia (1113–1166)
• Gregory IV the Young (1173–1193)
• Gregory V of Cilicia (1193–1194)
• Gregory VI of Cilicia (1194–1203)
• Gregory VII of Cilicia (1293–1307)
• Gregory VIII of Cilicia (1411–1418)
• Gregory IX of Cilicia (1439–1446)
• Gregory X of Armenia (1443–1465)
• Gregory XI of Armenia (1536–1545)
• Gregory XII of Armenia (1576–1590)

Armenian Catholic Patriarchs of Cilicia

• Gregory Petros V Kupelian (1788–1812)
• Gregory Petros VI Djeranian (1815–1841)
• Gregory Petros VIII Derasdvazadourian (1844–1866)
• Gregorio Pietro XV Agagianian (1895-1971), Armenian Catholic Patriarch of Cilicia in 1937-1962
• Gregory Peter XX Ghabroyan (1934–2021), Armenian Catholic Patriarch of Cilicia since 2015