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
 
See also
- Gregory IV of Athens, Metropolitan of Athens in 1827–1828
 - Pope Gregory (disambiguation)
 - Saint Gregory (disambiguation)
 - Gregory (disambiguation)
 - Gregory (given name)