List of state leaders in 623

622 state leaders - Events of 623 - 624 state leaders - State leaders by year

Africa

America

• Mayas - Pacal II, Ruler of Palenque (615–683)

Asia

• Chalukya - Pulakesi II, Chalukya ruler (609–642)
• China (Tang Dynasty) - Gaozu, Emperor of China (618–626)
• Japan (Asuka Period) - Suiko, Empress of Japan (593–628)
• Korea (Three Kingdoms) -
  • Baekje - Mu, King of Baekje (600–641)
  • Goguryeo - Yeongryu, King of Goguryeo (618–642)
  • Silla - Jinpyeong, King of Silla (579–632)
• Northern India - Harsha of Kannauj (606–648)
• Turkic Khaganate
  • Eastern Turkic Khaganate - Jiali Khan (621–630)
  • Western Turkic Khaganate- Tong Khan (618–630)

Europe

• Avars - Organa, Avar Khagan (617–630)
• Byzantine Empire - Heraclius (610–641)
• England (Heptarchy) - Raedwald of East Anglia, Bretwalda
  • Kingdom of East Anglia - Raedwald of East Anglia (593–624)
  • Kingdom of Essex - Sigeberht I (617–653)
  • Kingdom of Kent - Eadbald (616–640)
  • Northumbria - Edwin, King of Northumbria (616–632)
  • Wessex - Cynegils, King of Wessex (611–643)
• Frankish Empire - Clotaire II, King of the Franks (613–629)
  • Austrasia - Dagobert I, King of Austrasia (623–629)
• Lombard Kingdom - Adaloald (616–626)
• Scotland
  • Dál Riata - Eochaid Buide, King of Dál Riata (608–629)
  • Kingdom of Strathclyde - Bili I (621–633)
• Visigothic Kingdom - Suintila (621–631)
• Wales -
  • Kingdom of Gwynedd - Cadfan ap Iago (613-c.625)

Middle East

• Byzantine Empire - Heraclius (610–641)