List of state leaders in 877

This is a list of heads of state, heads of governments, and other rulers in the year 877.

Africa

• Egypt – Ahmad ibn Tulun, Tulunid Emir of Egypt (868–884)
• Ifriqiya – "Abu Ishaq" Ibrahim II ibn Ahmad, Aghlabids (875–902)
• Sultanate of Morocco – Ali ibn Umar, known as "Ali II", Idrisid dynasty (874–883)
• Kingdom of Nekor – Said II ibn Salih, Salihid Emir of Nekor (c.864-c.916)
• Tahert – Muhammad Abu'l-Yaqdan, Rustamid dynasty Imam of Tahert (c.873-c.894)
• Barghawata – Yunus ibn Ilyas (842–888)

Asia

• China (Tang dynasty) – Emperor Xizong (873–888)
• Pratihara Empire – Mihira Bhoja I (c. 836–886)
• Japan (Heian period) –
  • Monarch – Emperor Yōzei (876–884)
  • Regent (Sessho) – Fujiwara no Mototsune (876–884)
• Korea (North South States Period)
  • Balhae – Dae Hyeonseok (871–893)
  • Unified Silla – Heongang (875–886)

Europe

• First Bulgarian Empire – Boris I, Knyaz of Bulgaria (852–889)
• Byzantine Empire – Basil I the Macedonian (867–886)
• Caucasus
  • Principality of Iberia – David I (876–881)
  • Principality of Kakheti – Gabriel (861–881)
  • Klarjeti – Sumbat I Mampali (c. 870–889)
• Duchy of Croatia – Iljko (876–878)
• England (Heptarchy) –
  • Danelaw – Guthrum, King of the Danish Vikings (c. 874–c. 890)
    • Kingdom of East Anglia – Aethelred (876–879)
    • Kingdom of Mercia – Ceolwulf II (874–c. 881)
    • Kingdom of Northumbria – Ecgberht II (876–c. 878)
  • Kingdom of Wessex – Alfred the Great (871–899)
• East Francia –
  • Duchy of Alsace – Hugh, Duke of Alsace (867–885)
  • Kingdom of Bavaria – Carloman of Bavaria (876–880)
  • March of Pannonia – Aribo of Austria (871–909)
  • Kingdom of Saxony – Louis the Younger (876–882)
  • Duchy of Saxony – Bruno, Duke of Saxony (866–880)
  • Kingdom of Swabia – Charles the Fat (876–887)
  • Duchy of Thuringia – Radulf II (874–880)
• West Francia –
  1. Charles the Bald (840–877) and Holy Roman Emperor (875–877)
  2. Louis the Stammerer (877–879)
  • County of Angoulême – Wulgrin I (866–886)
  • Kingdom of Aquitaine – Louis the Stammerer (866–877)
  • County of Auvergne – Bernard II (872–886)
  • County of Auxerre – Hugh the Abbot (876–886)
  • County of Barcelona – Bernard II (865–878)
  • Duchy of Brittany – Two opposing claimants:
    • Judicael (876–888/889)
    • Alan I (876–907)
  • County of Flanders – Baldwin I (862–879)
  • County of Maine – Gauzfrid (865–878)
  • March of Neustria – Gauzfrid, Count of Maine (865–878)
  • County of Poitiers –
    1. Bernard of Gothia (866–877)
    2. Ranulf II of Aquitaine (877–890)
  • County of Toulouse –
    1. Bernard II (865–877)
    2. Bernard Plantapilosa (877–886)
  • County of Tours – Hugh the Abbot (866–886)
  • County of Troyes – Robert I (876–886)
  • County of Urgell – Wilfred the Hairy (870–897)
• Duchy of Gascony – Sans III Mitarra (864–893)
• Ireland – Áed Findliath, High King of Ireland (862–879)
  • Kingdom of Ailech – Áed Findliath (c. 855–879)
  • Kingdom of Connacht – Conchobar mac Taidg Mór (872–882)
  • Uí Maine –
  • Kingdom of Leinster –
  • Kingdom of Mide
    1. Donnchad mac Aedacain (864–877)
    2. Flann Sinna, King of Mide (877–916)
  • Kingdom of Munster – Dúnchad mac Duib-dá-Bairenn (872–888)
  • Kingdom of Osraige – Cerball mac Dúnlainge (842–888)
  • Kingdom of Ulaid – Ainbíth mac Áedo (873–882)
• Kingdom of Italy –
  1. Charles the Bald, King of Italy and Holy Roman Emperor (875–877)
  2. Carloman of Bavaria, King of Italy (877–879)
  • Principality of Benevento – Adelchis (854–878)
  • County of Capua – Landulf II (863–879)
  • March of Friuli – Berengar (874–890)
  • Duchy of Gaeta – Docibilis I, Hypatus of Gaeta (866–906)
  • Duchy of Naples –
    1. Sergius II (870–877)
    2. Athanasius (877–898)
  • Papal States – Pope John VIII (872–882)
  • Principality of Salerno – Guaifer (861–880)
  • Duchy of Spoleto – Lambert I (876–880)
  • March of Tuscany – Adalbert I (847–886)
  • Republic of Venice – Orso I Participazio, Doge of Venice (864–881)
• Great Moravia – Svatopluk I (870–894)
  • Duchy of Bohemia – Bořivoj I (c. 870–c. 889)
• Kingdom of Norway – Harald Fairhair (872–930)
• Novgorod – Rurik, Prince of Novgorod (862–879)
• Scotland -
  1. Constantine I, King of the Picts (862–877)
  2. Áed, King of the Picts (877–878)
• Principality of Serbia – Mutimir, Grand Župan (850–891)
• Spain –
  • County of Aragon – Aznar Galíndez II (867–893)
  • Kingdom of Asturias – Alfonso III (866–910)
    • County of Castile – Diego Rodríguez Porcelos (872–c. 885)
  • Emirate of Córdoba – Muhammad I (852–886)
  • County of Pallars – Raymond I (872–920)
  • Kingdom of Pamplona – García Íñiguez (851/852–882)
  • County of Ribagorza – Raymond I (872–920)
• Wales –
  • Kingdom of Gwynedd – Rhodri the Great (844–878)
  • Kingdom of Powys – Rhodri the Great (855–878)

Middle East

• Abbasid Caliphate – Al-Mu'tamid (870-892)
• Byzantine Empire – Basil I the Macedonian (Βασίλειος Α'), (867-886)
• Sistan – Ya'qub bin Laith as-Saffar, Saffarid dynasty (867–879)
• Transoxiana – Nasr I ibn Ahmad, Samanid (864–892)