List of state leaders in 900

899 state leaders - Events of 900 - 901 state leaders - State leaders by year-----

Africa

Asia

*Bohai/Balhae - Da Weixie/Dae Wigye, King of Bohai/Balhae (895-906)
*"'Byzantine_Empire - Leo VI, Byzantine Emperor (886 - 912)
*China (Tang Dynasty) - Zhaozong, Emperor of Tang China (888-904)
*Japan - Emperor Daigo, emperor of Japan (897-930)
*Korea (Later Three Kingdoms Period)
**Hubaekje -
***"Hubaekje is founded by Gyeon Hwon"
***Gyeon Hwon, King of Hubaekje (900-935)
**Silla - Hyogong, King of Silla (897-912)
*Khmer Empire - Yasovarman, King (899-910)

Europe

*Asturias - Alfonso III the Great, King of Asturias (866-910)
*Bulgaria - Simeon I the Great, Knyaz of Bulgaria (893-927)
*"'Byzantine Empire - Leo VI, Byzantine Emperor (886 - 912)
*Cordoba - Abdallah ibn Muhammad , Emir of Cordoba (888-912)
*East Francia - Louis the Child, King of East Francia (899-911)
*England - Edward the Elder, King of England (899-924)
*Great Moravia - Mojmír II, last king of the Great Moravian Empire (894-?906).
*Lotharingia - Zwentibold, King of Lotharingia (895-900)
*Norway - Harald I Fairhair, King of Norway (872-933)
*Scotland -
*#Donald II, King of Scots (889-900)
*#Constantine II, King of Scots (900–943)
*Venice - Pietro Tribuno, Doge of Venice (888-912)
*Wales -
**Anarawd ap Rhodri, King of Gwynedd (878-916)
*Western Francia - Charles the Simple, King of Western Francia (898-922)

Middle East

*Byzantine Empire - Leo VI, Byzantine Emperor (886 - 912)

Oceania

*Tonga - ʻAhoʻeitu, Tuʻi Tonga (c.900-?)