List of state leaders in 604

603 state leaders - Events of 604 - 605 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) -
  1. Emperor Wen, Emperor of China (581–617)
  2. Emperor Yang, Emperor of China (604–617)
• 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
  • Eastern Turkic Khaganate - Kimin Khan (604–609)
  • Western Turkic Khaganate- Chulo Khan (604–611)

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)
    • Saebert (604-c.617)
  • 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); After Aethelric's death, Aethelfrith of Northumbria takes control of Deira.
  • 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)