List of state leaders in 845

844 state leaders - Events of 845 - 846 state leaders - State leaders by year

Asia

• Bohai/Balhae - Da Yizhen/Dae I-jin, King of Bohai/Balhae (830-857)
• China (Tang Dynasty) - Wuzong, Emperor of Tang China (840-846)
• Gurjara - Mihira Bhoja I, Pratihara King of Gurjara (c. 836-886)
• Japan (Heian Period) - Emperor Nimmyō, emperor of Japan (833-850)
• Silla - Munseong, King of Silla (839-857)

Europe

• Al-Andalus - Abd-ar-rahman II, Emir of Cordoba (822-852)
• Asturias - Ramiro I, King of Asturias (842-850)
• Benevento - Ralchedis I, Prince of Benevento (839-851)
• Bulgaria - Presian, Khan of Bulgaria (836-852)
• East Anglia¹ - Æthelweard, King of East Anglia (839–855)
• East Francia - Louis the German, King of East Francia (843-876)
• England - Æthelwulf of Wessex, Bretwalda (839–856)
• Mercia - Beorhtwulf, King of Mercia (840–852)
• Middle Francia - Lothair I, King of Middle Francia (840-855), Holy Roman Emperor (823-855)
• Northumbria¹ - Æthelred II, King of Northumbria (844–849)
• Ireland -
  1. Turgesius of Norway, High King of Ireland (832–845)
  2. Bard of Limerick, High King of Ireland (845–880) & Mael Seachlainn I, High King of Ireland (845–860)
• Papal States - Sergius II, Pope (844-847)
• Scotland

• possibly: Kenneth I, King of the Scots (843–858); or:

• Picts:
  1. Brude VII, King of the Picts (842–845)
  2. Drust X, King of the Picts (845–848)
• Dál Riata - Kenneth I, King of Dalriada (843–858)

• Alt Clut - Artgal of Alt Clut, King of Alt Clut (816–872)
• Venice - Pietro Tradonico, Doge of Venice (837-864)
• Wales - Rhodri Mawr ap Merfyn, King of Gwynedd (844–878)
• Western Francia - Charles the Bald, King of Western Francia (843-877)

Middle East

• Abbasid Caliphate - Al-Wathiq, Caliph (842-847)
• Byzantine Empire
  • Michael III, Byzantine Emperor (842-867)
  • Theodora, Regent (842-855)

Notes

1. Though East Anglia, Northumbria and Mercia are traditionally perceived to have been in the heptarchy they were largely independent kingdoms until its conquest by the Danes in 869 and 867, respectively - where Mercia was conquered by Wessex in 874. All other members of the heptarchy had been conquered by Wessex and by this time had no form or king.