List of state leaders in 812

This is a list of heads of state, government leaders, and other rulers in the year 812.

Africa

• Berghouata – Ilyâs ibn Sâlih (792–842)
• Idrisid dynasty – Idris II (791–828)
• Kingdom of Makuria – ?
• Kingdom of Nekor – Salih II ibn Sa'id (803–864)

America

• Caracol – K’inich Toobil Yopaat (810–830)

Asia

• China (Tang dynasty) – Emperor Xianzong (806–820)
• Pratihara Empire – Nagabhata II (805–833)
• Japan (Heian period) – Emperor Saga (809–823)
• Khmer Empire – Jayavarman II (802–850)
• Korea (North South States Period)
  • Balhae –
    1. Jeong (809–812)
    2. Hui (812–817)
  • Unified Silla – Heondeok (809–826)
• Malwa – Upendra (Paramara dynasty) (c.800-c.818)
• Pala Empire – Devapala (810–850)
• Pallava Kingdom – Dantivarman (775–825)
• Rashtrakuta – Govinda III (793–814)
• Tibetan Empire – Sadnalegs (800–815)

Europe

• First Bulgarian Empire – Krum, Khan of the Bulgars (803–814)
• Byzantine Empire – Michael I Rhangabes (811–813)
• Caucasus
  • Principality of Kakheti – Grigol (786–827)
• Kingdom of Denmark –
  1. Hemming (810–812)
  2. Harald Klak (812–813)
  3. Reginfrid (812–813)
• England (Heptarchy) –
  • Kingdom of Essex – Sigered (798–812)
  • Kingdom of Mercia – Coenwulf (796–821) and East Anglia (c.799–821) and King of Kent (807–821)
  • Kingdom of Northumbria – Eanred (810–841)
  • Kingdom of Wessex – Egbert (802–839)
• Frankish Empire – Charlemagne (768–814) and Holy Roman Emperor (800–814)
  • County of Barcelona – Berà (801–820)
  • Duchy of Gascony –
    1. Sans I Lop of Gascony (bef. 801-c.812)
    2. Semen Lop of Gascony (c.812-c.816)
  • Duchy of Croatia – Borna of Croatia (c.810–821)
  • County of Toulouse – Beggo (806–816)
  • County of Urgell – Borell (798–820)
• Ireland – Áed Oirdnide, High King of Ireland (797–819)
  • Kingdom of Ailech – Áed Oirdnide (788–819)
  • Kingdom of Connacht – Muirgius mac Tommaltach (796–815)
  • Uí Maine – Cathal mac Murchadh (794–816)
  • Kingdom of Leinster –
    • Muiredach mac Brain, co-King of Leinster (808–818)
    • Muiredach mac Ruadrach, co-King of Leinster (808–829)
  • Kingdom of Mide – Conchobar mac Donnchada (803–833)
  • Kingdom of Ulaid – Cairell mac Fiachnai (810–819)
• Italy – Bernard, King of Italy (810–818)
  • Principality of Benevento – Grimoald IV of Benevento (806–817)
  • Papal States – Pope Leo III (795–816)
  • Republic of Venice – Agnello Participazio, Doge of Venice (811–827)
• Pannonian Croatia – Ljudevit Posavski (c.810–823)
• Scotland
  • Kingdom of the Picts – Causantín mac Fergusa (787–820)
• Spain –
  • County of Aragon – Aznar Galíndez I (809–820)
  • Kingdom of Asturias – Alfonso II (791–842)
  • Emirate of Córdoba – al-Hakam I (796–822)
• Wales –
  • Kingdom of Gwynedd – Cynan Dindaethwy ap Rhodri (c.798–816)
  • Kingdom of Powys – Cyngen ap Cadell (808–855)

Middle East

• Abbasid Caliphate (Baghdad) – al-Amin (809–813)
  • Ifriqiya –
    1. Ibrahim I ibn al-Aghlab ibn Salim, Emir of Ifriqiya (800–812)
    2. Abdullah I ibn Ibrahim, Emir of Ifriqiya (812–817)