List of state leaders in 503

Africa

America

*Palenque - Ahkal Mo' Naab' I, Ajaw of Palenque (501-524)

Asia

*China (Southern and Northern Dynasties) -
** Liang Dynasty - Emperor Wu, Emperor of Liang (502-549)
** Northern Wei Dynasty - Emperor Xuanwu, Emperor of Northern Wei (499-515)
*Japan (Kofun Era) - Emperor Buretsu, Emperor of Japan (c.498-c.507)
*Korea (Three Kingdoms) -
**Baekje - Muryeong, King of Baekje (501-523)
**Goguryeo - Munjamyeong, King of Goguryeo (491-519)
**Silla - Jijeung, King of Silla (500-514)

Europe

*Anglo-Saxon Heptarchy - Aelle, Bretwalda (c.477-c.514)
**South Saxons - Aelle, King of the South Saxons (c.477-c.514)
**Kent - Oisc, King of Kent (488-c.512)
*Burgundy - Gundobad, King of Burgundy (473-516)
*Byzantine Empire - Anastasius I, Byzantine Emperor (491-518)
*Gaul - Clovis I, King of the Franks (481-511)
*Ireland - Lughaid mac Loeguire, High King of Ireland (479-503)
*Italy - Theodoric I, King of the Ostrogoths in Italy (493-526)
*Visigoths - Alaric II, King of the Visigoths (484-507)

=Middle East=