List of 9th-century religious leaders
- List of 8th-century religious leaders - List of 10th-century religious leaders - Religious leaders by year
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Christianity
- Leo III, Pope (795–816)
- Stephen IV, Pope (816–817)
- Paschal I, Pope (817–824)
- Eugene II, Pope (824–827)
- Valentine, Pope (827)
- Gregory IV, Pope (827–844)
- Sergius II, Pope (844–847)
- Leo IV, Pope (847–855)
- Benedict III, Pope (855–858)
- Nicholas I, Pope (858–867)
- Adrian II, Pope (867–872)
- John VIII, Pope (872–882)
- Marinus I, Pope (882–884)
- Adrian III, Pope (884–885)
- Stephen V, Pope (885–891)
- Formosus, Pope (891–896)
- Boniface VI, Pope (896)
- Stephen VI, Pope (896–897)
- Romanus, Pope (897)
- Theodore II, Pope (897)
- John IX, Pope (898–900)
- Benedict IV, Pope (900–903)
- Tarasius, Patriarch of Constantinople (784–806)
- Nikephoros I, Patriarch of Constantinople (806–815)
- Theodotus I Kassiteras, Patriarch of Constantinople (815–821)
- Antony I, Patriarch of Constantinople (821–836)
- John VII Grammaticus, Patriarch of Constantinople (836–843)
- Methodius I, Patriarch of Constantinople (843–847)
- Ignatius I, Patriarch of Constantinople (847–858, 867–877)
- Photius I the Great, Patriarch of Constantinople (858–867, 877–886)
- Ignatius I, Patriarch of Constantinople (847–858, 867–877)
- Photius I the Great, Patriarch of Constantinople (858–867, 877–886)
- Stephen I, Patriarch of Constantinople (886–893)
- Antony II Kauleas, Patriarch of Constantinople (893–901)