List of state leaders in 918

917 state leaders – Events of 918 – 919 state leaders – State leaders by year

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Africa

• Ifriqiya – Ubayd Allah al-Mahdi Billah, Fatimid Caliph (909–934)
• Morocco – Yahya IV, Idrisid Emir (904–922)

Asia

• Byzantine Empire – Constantine VII, Byzantine Emperor (913–959)
• China (Five Dynasties and Ten Kingdoms Period) –
  • Later Liang Dynasty – Modi, Emperor of Later Liang (913–923)
  • Chu – Ma Yin, King of Chu (907–930)
  • Dingnan – Li Renfu, Dingnan Jiedushi (909–933)
  • Former Shu –
    1. Wang Jian – (Gaozu of Former Shu), Emperor of Former Shu (907–918)
    2. Wang Yan, Emperor of Former Shu (918–925)
  • Jin – Li Cunxu, King of Jin (908–923); Emperor of Later Tang (923–926)
  • Jingnan – Gao Jixing, Jingnan Jiedushi (907–924); King of Nanping (924–928)
  • Min – Wang Shenzhi, King of Min (909–925)
  • Qi – Li Maozhen, King of Qi (901–924)
  • Southern Han – Liu Yan, King of Nanhai (911–917); Emperor of Southern Han (917–941)
  • Wu – Yang Longyan, King of Wu (908–921)
  • Wuyue – Qian Liu, King of Wuyue (907–932)
  • Yiwu – Wang Chuzhi, Yiwu Jiedushi (900–921)
  • Zhao (Chengde) – Wang Rong, Chengde Jiedushi (883–921)
• Japan – Emperor Daigo, emperor of Japan (897–930)
• Khitan Empire – Taizu, Khitan Emperor (907–926)
• Korea (Later Three Kingdoms Period)
  • Balhae – Dae Inseon, King of Balhae (906–926)
  • Taebong / Goryeo –
    1. Gung Ye, King of Majin (901–911); King of Taebong (911–918)
    2. Taejo, King of Goryeo (918–943)
  • Hubaekje – Gyeon Hwon, King of Hubaekje (900–935)
  • Silla – Gyeongmyeong, King of Silla (917–924)

Europe

• Asturias – Fruela II the Cruel, King of Asturias (910–925)
• Benevento – Landulf I, Prince of Benevento (910–943)
• Bohemia – Vratislaus I, Duke of Bohemia (915–921)
• Bulgaria – Simeon I the Great, Tsar of Bulgaria (893–927)
• Byzantine Empire – Constantine VII, Byzantine Emperor (913–959)
• Dalmatia – Tomislav, Duke of Dalmatia (910–925)
• Denmark – Harthacnut, King of Denmark (c.916-c.947)
• England – Edward the Elder, King of England (899–923)
• Galicia – Ordoño II, King of Galicia (910–924)
• Germany – Henry the Fowler, King of Germany (919–936)
  • Bavaria – Arnulf the Bad, Duke of Bavaria (907–937)
  • Franconia – Eberhard III. Duke of Franconia (911–939)
  • Saxony – Henry I the Fowler, Duke of Saxony (912–936)
  • Swabia – Burchard II, Duke of Swabia (917–926)
• Holy Roman Empire – Berengar of Friuli, Holy Roman Emperor (915–922)
• Hungary – Zoltan, Duke of Hungary (900–955)
• Italy – Berengar of Friuli. King of Italy (905–922)
• Kievan Rus – Igor, Grand Prince of Kiev (912–945)
• León – Ordono II, King of Leon (914–924)
• Norway – Harald I Fairhair, King of Norway (872–933)
• Papal States – John X, Pope (914–928)
• Scotland – Constantine II, King of Scotland (900–943)
• Serbia - Pavle Branović, Knez of Serbia (817-921)
  • Mihailo Višević, Great Prince of Zahumlje (910-930)
• Sweden – Ring, King of Sweden (c.910-c.940)
• Venice – Orso II Participazio, Doge of Venice (912–932)
• Western Francia – Charles the Simple, King of Western Francia (898–922)
  • Anjou – Fulk I, Count of Anjou (898–941)
  • Aquitaine
    • William I, Duke of Aquitaine (893–918)
    • William II the Younger, Duke of Aquitaine (918–927)
  • Burgundy – Richard, Duke of Burgundy (887–921)
  • Flanders – Arnulf I, Count of Flanders (918–964)
  • Gascony – Gassia II Sans, Duke of Gascony (c.893-c.930)
  • Normandy – Rollo, Duke of Normandy (911–927)
  • Toulouse – Eudes, Count of Toulouse (872–919)
  • Vermandois – Herbert II, Count of Vermandois (907–943)

Middle East

• Abbasid Caliphate – Al-Muqtadir. Abbasid Caliph (908–932)
• Byzantine Empire – Constantine VII Porphyrogenitos, Byzantine Emperor (913–959)