List of state leaders in 603

602 state leaders - Events of 603 - 604 state leaders - State leaders by year

Africa

America

• Mayas - Yohl Iknal, Ruler of Palenque (583–604)

Asia

• Chalukyas - Mangalesa, Chalukya ruler (597–609)
• China (Sui Dynasty) - Wendi, Emperor of China (581–617)
• Japan (Asuka Period) - Suiko, Empress of Japan (593–628)
• Korea (Three Kingdoms) -
  • Baekje - Mu, King of Baekje (600–641)
  • Goguryeo - Yeongyang, King of Goguryeo (590–618)
  • Silla - Jinpyeong, King of Silla (579–632)

Turkic Khaganate, Tardu (600–603)

Europe

• Avars - Bayan II, Avar Khagan (602–617)
• Byzantine Empire - Phocas (602–610)
• England (Heptarchy)
  • Kingdom of East Anglia - Raedwald of East Anglia (593–624)
  • Kingdom of Essex - Sledda (587–604)
  • Kingdom of Kent - Aethelbert (564 or 580–616)
  • Northumbria
    • Bernicia - Æthelfrith of Northumbria, King of Bernicia (593–616)
    • Deira - Aethelric of Deira, King of Deira (589–604)
  • Wessex - Ceolwulf, King of Wessex (597–611)
• Franks
  • Austrasia - Theudebert II, King of Austrasia (595–612)
  • Kingdom of Burgundy - Theuderic II (595–613)
  • Neustria - Clotaire II, King of the Franks (584–629)
• Lombard Kingdom - Agilulf (590–616)
• Scotland
  • Dál Riata - Áedán mac Gabráin, King of Dál Riata (559–608)
  • Kingdom of Strathclyde, Rhyddech I (580–612)
• Visigothic Kingdom - Witteric (603–610)

Middle East

• Byzantine Empire - Phocas (602–610)
• Persia - Khosrau II, Persian Emperor (590–628)