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
- 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
- Gregory of Bulgaria, Patriarch c. 940 – c. 960
- Gregory the Illuminator, patron saint and first official head of the Armenian Apostolic Church
- Grigoris , 4th-century catholicos of Caucasian Albania and martyr
- Gregory II the Martyrophile
- Grigor III Pahlavuni, Catholicos Gregory III of Cilicia
- Gregory V of Cilicia
- Gregory VI of Cilicia
- Gregory VII of Cilicia
- Gregory IX of Cilicia
- Gregory X of Armenia
- Gregory XI of Armenia
- Gregory XII of Armenia