List of heads of state 921

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Africa

• Ethiopia
  • Emperor (Negus Negest) : Tatadim (919–959)

• Fatimids
  • Caliph : Abdallah al-Mahdi (910-934)

Asia

• Armenia
  • King : Ashot II (914–928)

• Bagan
  • King : Tannet (906–934)

• Champa
  • King : Indravarman III. (918-959)

• China
  • Emperor : Zhū ​​Zhèn (913–923)
  • Liao (in North China)
    • Emperor : Liao Taizu (907-926)

• Georgia
  • King : Adarnase IV (891–923)

• India
  • Eastern Chalukya
    • King : Chalukya Bhima I (892–921)
    • King: Vijayaditya IV (921)
    • King: Amma I (921-927)
  • Chola
    • King : Paranthaha I (907–955)
  • Pala
    • King : Rajyapala (908-945)
  • Pratihara
    • King : Samrat Mahipala (914–943)
  • Rashtrakuta
    • King : Indra III. (914-929)

• Iran
  • Samanids
    • Ruler : al-Amir as-Said Nasr (914–943)

• Japan
  • Emperor : Daigo (897-930)

• Khmer
  • King : Harshavarman I (910–923)

• Korea
  • Balhae
    • King : Aeje (906–926)
  • Goryeo
    • King : Taejo (918–943), called King Wang Geon during his lifetime and posthumously called King Taejo
  • Silla
    • King : Gyeongmyeong (917–924)

• Mataram
  • King : Tulodong (919–924)

• Caliphate of the Muslims
  • Caliph : al-Muqtadir (908-932)

Europe

• Bulgaria
  • Tsar : Simeon I (893-927)

• Burgundy
  • King : Rudolf II (912–937)

• Byzantine Empire
  • Emperor : Constantine VII (913–959)

• England
  • King : Edward the Elder (899-924)
  • Jórvík
    • King : Ragnald I (910–921)
    • King: Sihtric the Blind (921–927)

• West Franconia
  • King : Charles III. the simple- minded (898–922)
  • Aquitaine
    • Duke : Wilhelm II. (918–926)
  • Burgundy (Duchy)
    • Duke : Richard the judge (918–921)
    • Duke: Rudolf of Burgundy (921–923)
  • Maine
    • Count : Hugo I. (900–950)
  • Normandy
    • Duke : Rollo (911–927)
  • Toulouse county
    • Count : Raimund II. (919–923)

• Eastern Franconia
  • King : Henry I (919–936)
    • Bavaria
      • Duke : Arnulf I. (907-937)
    • Bohemia
      • Duke : Vratislav I (915-921)
      • Duke: Wenceslaus of Bohemia (921–929 / 935)
    • Flanders
      • Count : Arnulf I. (918–964)
    • Holland
      • Count : Dietrich I. (916-939)
    • Saxony
      • Duke : Henry I (912–936)
    • Swabia
      • Duke : Burchard II (917–926)

• Italy
  • Emperor : Berengar I (905-924)
  • Benevento
    • Duke : Atenulf II (911–940) also Prince of Capua
  • Ivrea
    • Margrave : Adalbert I. (902–925)
  • Papal States
    • Pope : John X. (914–928)
  • Naples
    • Duke : Marinus I (919–928)
  • Salerno
    • Prince : Waimar II (900–946)
  • Tuscany
    • Duke : Guido of Tuszien (915–929)
  • Venice
    • Doge of Venice : Orso II. Particiaco (912-932)

• Kievan Rus
  • Grand Duke : Igor (912–945)

• Croatia
  • King : Tomislav (910–928)

• Norway
  • King : Harald I (872-933)

• Raszien
  • Großžupan : Pavle Branović (917–921)
  • Großžupan: Zaharije Prvosavljević (921-924)

• Scotland
  • King : Constantine II (900–943)

• Spain
  • Asturias
    • King : Fruela II (910–925)
  • Barcelona county
    • Count : Sunyer I. (911-947)
  • Emirate of Cordoba
    • Emir: Abd ar-Rahman III. (912-961)
  • Leon
    • King : Ordoño II (914–924)
  • Navarre
    • King : Sancho I. (905–925)

• Hungary
  • Grand Duke : Zoltán (907–947)

• Wales
  • Gwynedd
    • Prince : Idwal the Bald (916–942)
  • Powys
    • Prince : Llywelyn ap Merfyn (900–942)