List of state leaders in 648

647 state leaders - Events of 648 - 649 state leaders - State leaders by year

Africa

America

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

Asia

• China (Tang Dynasty) - Taizong, Emperor of China (627–649)
• Japan (Asuka Period) - Kōtoku, Emperor of Japan (645–654)
• Korea (Three Kingdoms) -
  • Baekje - Uija, King of Baekje (641–660)
  • Goguryeo - Bojang, King of Goguryeo (642–668)
  • Silla - Jindeok, Queen of Silla (647–654)

Europe

• Byzantine Empire - Constans II (641–668)
• England (Heptarchy) - Oswiu of Northumbria, Bretwalda
  • Kingdom of East Anglia - Anna of East Anglia (635–653)
  • Kingdom of Essex - Sigeberht I (617–653)
  • Kingdom of Kent - Eorcenberht (640–664)
  • Mercia - Penda, King of Mercia (ca.626–655)
  • Northumbria -
    • Bernicia - Oswiu, King of Bernicia (642–670)
    • Deira - Oswine of Deira, King of Deira (642–651)
  • Kingdom of Sussex -
  • Wessex - Cenwalh, King of Wessex (643–674)
• Frankish Empire -
  • Austrasia - Sigebert III, King of Austrasia (634–656/660)
  • Neustria and Burgundy - Clovis II, King of Neustria (639–655)
• Great Bulgaria - Khan Kubrat, (632–665)
• Lombard Kingdom - Rothari (636–652)
• Moravia - Samo, King of the Slavs (623–658)
• Scotland
  • Dál Riata - Ferchar mac Connaid, King of Dál Riata (642–650)
  • Kingdom of Strathclyde - Gwriad (645–658)
• Visigothic Kingdom - Chindasuinth (642–653)
• Wales -
  • Kingdom of Gwynedd - Cadafael Cadomedd ap Cynfeddw (634–655)
  • Kingdom of Powys

Middle East

• Caliphate - Uthman ibn Affan (644–656)
• Byzantine Empire - Constans II (641–668)
• Persia - Yazdegerd III, Persian Emperor (632–651)