List of state leaders in 721

720 state leaders - Events of 721 - 722 state leaders - State leaders by year

Africa

• Makuria - Merkurios, King of Makuria (697–722)
• Nekor - Salih I ibn Mansur, King of Nekor (710–749)

America

• Calakmul - Yuknoom Yich'aak K'ak, (702–731)
• Copán - Uaxaclajuun Ub'aah K'awiil, (675–738)
• Tikal - Hasaw Chan K'awil, (682–732)

Asia

• China (Tang Dynasty) - Xuanzong, Emperor of Tang China (712–756)
• Japan (Nara Period) - Genshō, Empress of Japan (715–724)
• Korea (North South States Period)
  • Balhae - Mu, King of Balhae(719–737)
  • Silla - Seongdeok the Great, King of Silla (702–737)
• Pallava - Parameswaran II, King of Pallava, (710–775)
• Tibet - Khri-lde gtsug-brtan, Emperor of Tibet (680–743)
• Turkic Khaganate - Bilge Khan (717-734)

Europe

• Bulgaria -
  1. Tervel of Bulgaria, Khan of Bulgaria (695–721)
  2. Kormesiy, Khan of Bulgaria (721–738)
• Byzantine Empire - Leo III the Isaurian, (717–741)
• England (Heptarchy) -
  • Kingdom of East Anglia - Aelfwald (713–749)
  • Kingdom of Essex -
    • Saelred (709–746)
    • Swaefbert, (715–738)
  • Kingdom of Kent - Wihtred (690–725)
  • Mercia - Ethelbald, King of Mercia (716–757)
  • Northumbria - Osric, King of Northumbria (718–729)
  • Kingdom of Sussex -
    • Nothelm (fl.692–725)
    • Watt (fl.692–725)
  • Wessex - Ine, King of Wessex (688–726)
• Frankish Empire -
  • Theuderic IV, King of the Franks (720–737)
  • Charles Martel, Mayor of the Palace (714–741)
  • Aquitaine - Odo the Great, Duke of Aquitaine (c.715–730)
• Frisia - Poppo, King of the Frisians (719–734)
• Georgia -
  • Klarjeti - Nerse, (705–742)
• Ireland - Fergal mac Máele Dúin, High King of Ireland (710–722)
  • Connacht - Indrechtach mac Muiredaig, King of Connacht (707–723)
  • Uí Maine - Dluthach mac Fithcheallach, King of Uí Maine (711–738)
  • Leinster - Murchad mac Brain Mut, King of Leinster (715–727)
  • Ulaid - Áed Róin, (708–735)
• Lombard Kingdom - Liutprand, (712–744)
• Serbs - Ratimir, Ruler of the Serbs (700–730)
• Scotland
  • Dál Riata - Selbach mac Ferchair (700–723)
  • Kingdom of Strathclyde - Beli II (694–722)
  • Picts - Nechtan mac Derile, King of the Picts (706–724)
• Spain -
  • Kingdom of Asturias - Pelayo (718–737)
• Venice - Marcello Tegalliano, Doge of Venice (717–726)
• Wales -
  • Kingdom of Gwynedd - Rhodri Molwynog ap Idwal (720–754)
  • Kingdom of Powys - Gwylog ap Beli (695–725)

Middle East

• Caliphate - Yazid II, Caliph of Damascus (720–724)