List of state leaders in 821

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820 state leaders - Events of 821 - 822 state leaders - State leaders by year

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[edit] Asia

• Bohai/Balhae - Da Renxiu/Dae In-su, King of Bohai/Balhae (818?-830)
• China (Tang Dynasty) - Muzong, Emperor of Tang China (821-824)
• Gurjara - Nagabhata II, Pratihara King of Gurjara (805-833)
• Japan (Heian Period) - Emperor Saga, Emperor of Japan (809-823)
• Silla - Heondeok, King of Silla (809-826)

[edit] Europe

• Asturias - Alfonso II, King of Asturias (791-842)
• Dál Riata - Óengus, King of Dalriada (820–834)
• East Anglia -
  1. Coenwulf, King of East Anglia (799–821)
  2. Coelwulf I, King of East Anglia (821–823)
• Essex - Sigered, King of Essex (798–825)
• Frankish Empire - Louis the Pious, Holy Roman Emperor (816-840)
• Kent - Baldred, King of Kent (807–825)
• Mercia -
  1. Coenwulf, King of Mercia (796–821)
  2. Coenelm, King of Mercia (821)
  3. Ceolwulf I, King of Mercia (821–823)
• Northumbria - Eanred, King of Northumbria (810–841)
• Ireland - Conchobar, High King of Ireland (818–831)
• Picts - Óengus (II), King of the Picts (820–834)
• Strathclyde - Arthgal f Dyfnwal, King of Strathclyde (816–872)
• Venice - Agnello Participazio, Doge of Venice (811-827)
• Wales - Hywel Farf-Fehinog ab Caradog, King of Gwynedd (814–825)
• Wessex - Egbert of Wessex, King of Wessex and Bretwalda (802–839)