List of state leaders in 644

643 state leaders - Events of 644 - 645 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) - Kōgyoku, Empress of Japan (642-645)
*Korea (Three Kingdoms) -
**Baekje - Uija, King of Baekje (641-660)
**Goguryeo - Bojang, King of Goguryeo (642-668)
**Silla - Seondeok, Queen of Silla (632-647)

Europe

*Avars - Avar Khagan (617–665)
*England (Heptarchy) - Oswiu of Northumbria, Bretwalda
**East Anglia - Anna, King of East Anglia (635-654)
**Essex - Sigeberht I, King of Essex (617-653)
**Kent - Eorcenberht, King of Kent (640-666)
**Mercia - Penda, King of Mercia (c.626-655)
**Northumbria
***Bernicia - Oswiu, King of Bernicia (642-644
***Deira
****Oswiu, King of Deira (642-644)
****Oswine, King of Deira (644-651)
**Sussex - unknown ruler
**Wessex - Cenwalh, King of Wessex (643-674)
*Franks (Merovingian Dynasty)
**Neustria - Clovis II, King of Neustria (639-655)
**Austrasia - Sigebert III, King of Austrasia (635-660)
*Great Bulgaria - Khan Kubrat, (632-668)
*Lombard Kingdom - Rothari (636 - 652)
*Scotland
**Dál Riata - Ferchar mac Connaid, King of Dál Riata (642-650)
**Strathclyde - Eugein I of Alt Clut, King of Alt Clut (633-645)
*Visigothic Kingdom - Chindasuinth, King of the Visigoths (641-653)

Middle East

*Caliphate
**Umar ibn al-Khattab, Caliph (634-644)
**Uthman ibn Affan, Caliph (644-656)
*Byzantine Empire - Constans II, Byzantine Emperor (641-668)
*Persia - Yazdegerd III, Persian Emperor (632-651)