List of state leaders in 780

Africa

*Makuria - ?
*Nekor - Sa'id I ibn Idris King of Nekor (760-803)

America

*Calakmul - B'olon K'awil, (c.771-c.789)
*Copán - Yax-Pasaj Chan Yoaat, (763-aft.810)
*Tikal - Yax Nuun Ayiin II, (768-790)

Asia

*Bohai/Balhae - Da Qinmao/Dae Heung-mu, King of Bohai/Balhae (737-793)
*China (Tang Dynasty) - Dezong, Emperor of Tang China (780-805)
*Gurjara - Vatsaraja, Pratihara King of Gurjara (775-805)
*Japan (Nara Period) - Kōnin, Emperor of Japan (770-781)
*Pala Empire - Dharmapala (770-781)
*Pallava - Thandi Varman, King of Pallava (775-825)
*Rashtrakuta - Krishna I, (768-783)
*Silla - King of Silla
*#Hyegong, (765-780)
*# Seondeok, (780-785)
*Tibet - Emperor of Tibet
**Khri-srong lDe-btsan, (730-785)
**Mu-ne btsan-po, (762-786)
**Mu-tig btsan-po, (764-817)

Europe

*Asturias - Silo, King of Asturias (774-783)
*Bulgaria - Kardam, Khan of the Bulgars (777-803)
*Byzantine Empire - Roman Emperor
*#Leo IV the Khazar, (775-780)
*#Constantine VI, (780-797)
*Córdoba - Abd-ar-rahman I, Emir of Córdoba (756-788)
*Dál Riata - Fergus mac Echdach, King of Dál Riata (778-781)
*East Anglia - Æthelberht II, King of East Anglia (779-794)
*Essex - Sigeric, King of Essex (758-798)
*Franks - Charlemagne, King of the Franks (768-814)
*Gwynedd - Caradog ap Meirion, King of Gwynedd (c.754-c.798)
*Ireland - Donnchadh, High King of Ireland (766-792)
**Ailech - Mael Duin mac Aedo, King of Ailech (770-788)
**Connacht - Artgal mac Cathal, King of Connacht (777-782)
**Hy-Many - King of Hy-Many
**#Dunchadh Ua Daimhine, (767-780)
**#Conall mac Fidhghal, (780-782)
**Leinster - Ruaidri mac Faelan, King of Leinster (776-785)
**Mide - Donnchad Midi mac Domnaill, King of Mide (766-797)
**Ulaid - Fiachna, King of Ulaid (749-785)
*Klarjeti - Adarnase, Duke of Klarjeti (742-779)
*Mercia - Offa, King of Mercia (757-796)
**Kent - King of Kent
***Egbert II, (764-c.784)
**Sussex - King of Sussex
***Ealdwulf, (c.772-c.791)
*Northumbria - Aelfwald I, King of Northumbria (779-788)
*Papal States - Adrian I, Pope of the Roman Catholic Church (772-795)
*Picts - King of the Picts
*#Alpin, (775-780)
*#Drust mac Talorcan, (c.780-781)
*Saxons - Widukind, King of the Saxons (743-807)
*Serbs - Višeslav of Serbia, Prince of the Serbs (fl. c.780)
*Strathclyde - King of Strathclyde
*#Owain, (760-c.780)
*#Riderch, (c.780-c.798)
*Venice - Maurizio Galbaio, Doge of Venice (764-787)
*Wessex - Cynewulf, King of Wessex (757-786)

Middle East

*Armenia - vacant
*Caliphate - al-Mahdi, Caliph in Baghdad (775-785)