List of 9th-century religious leaders

Lists of religious leaders by century:

List of 7th-century religious leaders List of 8th-century religious leaders List of 10th-century religious leaders List of 11th-century religious leaders

See also:

List of state leaders in the 9th century Lists of colonial governors century

This is a list of the top-level leaders for religious groups with at least 50,000 adherents, and that led anytime from January 1, 801, to December 31, 900. It should likewise only name leaders listed on other articles and lists.

Christianity

Church of Rome (complete list) –

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)

Church of Constantinople (complete list) –

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)

Islam

Sunni

Abbasid Caliphate, Baghdad (complete list) –

Harun al-Rashid, Caliph (786–809)
al-Amin, Caliph (809–813)
al-Ma'mun, Caliph (813–833)
al-Mu'tasim, Caliph (833–842)
al-Wathiq, Caliph (842–847)
al-Mutawakkil, Caliph (847–861)
al-Muntasir, Caliph (861–862)
al-Musta'in, Caliph (862–866)
al-Mu'tazz, Caliph (866–869)
al-Muhtadi, Caliph (869–870)
al-Mu'tamid, Caliph (870–892)
al-Mu'tadid, Caliph (892–902)

Shia

Twelver Islam

Imams (complete list) –
Ali al-Ridha, Imam (799–819)
Muhammad al-Jawad, Imam (819–835)
Ali al-Hadi, Imam (835–868)
Hasan al-Askari, Imam (868–874)
Muhammad al-Mahdi, Imam (874–present) Shia belief holds that he was hidden by Allah in 874.