List of state leaders in 1420

1419 state leaders - Events of 1420 - 1421 state leaders - State leaders by year ----

Africa

*Ethiopia - Yeshaq I, Emperor of Ethiopia, (1414-1429)

Asia

*China (Ming Dynasty) - Yongle, Emperor of China (1402 - 1424)
*Chūzan - Shō Shishō - King of Chūzan (1407-1421)
* Japan
** Monarch - Shoko, Emperor of Japan (1412-1428)
** Shogun (Ashikaga) - Ashikaga Yoshimochi, Shogun of Japan (1394-1423)
*Korea (Joseon Dynasty) - Sejong, King of Joseon (1418-1450)
*Nanzan - Taromai - King of Nanzan (1415-1429)

Europe

*Byzantine Empire - Manuel II Palaeologus, Byzantine Emperor, (1391-1425)
*Castile - John II, King of Castile (1406-1454)
*England - Henry V, King of England (1413-1422)
*France - Valois Dynasty - Charles VI of France "the Well-Beloved", later "the Mad" (1380-1422)
*Germany (House of Luxembourg) - Sigismund, King of the Romans (1410-1437)
**Bavaria-Straubing (civil war) (house of Wittelsbach) -
***Jacqueline, duchess of Bavaria-Straubing and countess of Holland and Hainaut (1417-1432)
***John, duke of Bavaria-Straubing and count of Holland and Hainaut (1417-1425)
**Margraviate of Meißen (Wettin) - Wilhelm der Reiche (1381-1425) and Friedrich der Streitbare (1381-1428)
**Thuringia (Wettin) - Friedrich IV der Friedfertige (1406-1440)
*Naples - rival claimants:
**Joan II, Queen of Naples (1414-1435)
**Louis III, King of Naples (1417-1426)
*Poland - Władysław II Jagiełło, King of Poland (1386-1434)
*Scotland - James I, King of Scotland (1406-1437)
*Bosnia
**Tvrtko II, restored, King of Bosnia (1421-1433)

Middle East and North Africa

*Ak Koyunlu - Kara Osman, Leader of the White Sheep Turkmen (1403-1435)
*Cyprus - Janus, King of Cyprus (1398-1432)
*Egypt - Sayf-ad-Din Tatar, Sultan of Egypt (1412-1421)
*Trebizond - Alexius IV, Emperor of Trebizond (1416-1429)