List of state leaders in 816

Africa

*Berghouata - Ilyâs ibn Sâlih (792-842)
*Idrisids - Idris II (791-828)
*Makuria - ?
*Nekor - Salih II ibn Sa'id, King of Nekor (803-864)

America

*Caracol - K'inich Toob'il Yoaat, (810-830)

Asia

*Bohai/Balhae - Da Yanyi/Dae Eon-ui, King of Bohai/Balhae (812-817?)
*China (Tang Dynasty) - Xianzong, Emperor of Tang China (806-820)
*Gurjara - Nagabhata II, Pratihara King of Gurjara (805-833)
*Japan (Heian Period) - Saga, Emperor of Japan (809-823)
*Khmer empire - Jayavarman II, King of Khmer (802-850)
*Malwa - Upendra, Paramara King of Malwa (c.800-c.818)
*Pala Empire - Devapala (810-850)
*Pallava - Thandi Varman, King of Pallava (775-825)
*Rashtrakuta - Amoghavarsha, (814-878
*Silla - Heondeok, King of Silla (809-826)
*Tibet -
**Mu-tig btsan-po, Emperor of Tibet (764-817)
**Glan dar-ma, Emperor of Tibet (803-841)
**Ral-pa-can, Emperor of Tibet (806-817)

Europe

*Aragon - Aznar I Galíndez - Count of Aragon (809-820)
*Asturias - Alfonso II, King of Asturias (791-842)
*Bulgaria - Omortag, Khan of the Bulgars (815-831)
*Byzantine Empire - Leo V the Armenian. Roman Emperor (813-820)
*Cordoba - al-Hakam I, Emir of Cordoba (796-822)
*Franks - Louis the Pious, King of the Franks and Holy Roman Emperor (814-840)
**Barcelona - Berà, Count of Barcelona (801-820)
**Dalmatian Croats - Borna, Duke of the Dalmatian Croats (c.810-821)
**Gascony -
**#Semen Lop of Gascony, Duke of Gascony (c.812-c.816)
**#Gassia I Semen, Duke of Gascony (816-818)
**Italy - Bernard, King of Italy (810-818)
**Poitiers -
***Renaud, Count of Poitiers (795-843
***Bernard I, Count of Poitiers (815-844)
**Toulouse - Bérenger le Sage, Duke of Toulouse (814-835)
**Urgell - Borell, Count of Urgell (789-820)
*Gwynedd -
*#Cynan "Dindaethwy" ap Rhodri, King of Gwynedd (c.798-816)
*#Hywel "Farf-Fehinog" ab Caradog
*Ireland - Aed Oirdnide mac Neill, High King of Ireland (766-792)
**Ailech - Aed Oirdnide mac Neill, King of Ailech (788-819)
**Connacht - ?
**Hy-Many - Cathal mac Murchadh, King of Hy-Many (794-816)
**Leinster - Muiredach mac Ruaidri, King of Leinster (808-829)
**Mide - Conchobar mac Donnchado, King of Mide (803-833)
**Ulaid -
**#Cairell, King of the Ulaid (?-816)
**#Muiredach, King of the Ulaid (816-?)
*Kartli - Ashot I Kurapalate, Prince of Kartli (809-826)
*Mercia - Cenwulf, King of Mercia (796-821) and East Anglia (c.799-821) and King of Kent (807-821)
**Essex - Sigered, Duke of Essex (812-825)
*Northumbria - Eanred, King of Northumbria (810-841)
*Pannonian Croats - Ljudevit Posavski, Duke of the Pannonian Croats (c.810-823)
*Papal States -
*#Leo III, Pope of the Roman Catholic Church (795-816)
*#Stephen IV, Pope of the Roman Catholic Church (816-817)
*Picts - Caustantín, King of the Picts (789-820)
*Strathclyde -
*#Cynan, King of Strathclyde (c.798-816)
*#Artgal, King of Strathclyde (816-872)
*Venice - Angelo Participazio, Doge of Venice (809-827)
*Wessex - Egbert, King of Wessex (802-839)

Middle East

*Caliphate - al-Ma'mun, Caliph in Baghdad (813-833)
**Ifriqiya - Abdullah I ibn Ibrahim, Emir of Ifriqiya (812-817)