List of state leaders in 798

Asia

• Bohai/Balhae - Da Songlin/Dae Seung-rin , King of Bohai/Balhae (794-808)
• China (Tang Dynasty) - Dezong , Emperor of Tang China (780-805)
• Gurjara - Vatsaraja , Pratihara King of Gurjara (775-805)
• Japan (Heian Period) - Kammu, Emperor of Japan (781-806)
• Silla -
  1. Weonseong , King of Silla (785-798)
  2. Soseong , King of Silla (798-800)

Europe

• Dalriada - Constantine, King of Dalriada (781–820)
• East Anglia - Eadwald , King of East Anglia (796–799)
• Essex -
  1. Sigeric , King of Essex (758–798)
  2. Sigered , King of Essex (798–825)
• Kent -
  1. Eadbert II, King of Kent (796–798)
  2. Eadwald , King of Kent (798–807)
• Mercia - Coenwulf I, King of Mercia (796–821)
• Northumbria - Eardwulf , King of Northumbria (796–806/808)
• Ireland - Aedh Oirdnidhe , High King of Ireland (793–817)
• Picts - Constantine, King of the Picts (789–820)
• Strathclyde -
  1. Rudderch , King of Strathclyde (780–798)
  2. Cynan , King of Strathclyde (798–816)
• Wales -
  1. Caradog ap Meirion, King of Gwynedd (754–798)
  2. Cynan Dindaethwy ap Rhodri , King of Gwynedd (798–816)
• Wessex - Beorhtric, King of Wessex (786–802)