List of state leaders in 1420
Appearance
1419 state leaders - Events of 1420 - 1421 state leaders - State leaders by year
Africa
- Empire of Ethiopia - Yeshaq I (1414–1429)
The Americas
- Inca Empire - Viracocha (1410–1437)
Asia
- China (Ming Dynasty) - Yongle Emperor (1402–1424)
- Japan (Muromachi period)
- Tennō - Emperor Shōkō (1412–1428)
- Shogun (Ashikaga) - Ashikaga Yoshimochi (1394–1423)
- Korea (Joseon Dynasty) - Sejong (1418–1450)
- Ryukyu Islands
- Kingdom of Chūzan - Shō Shishō (1407–1421)
- Kingdom of Nanzan - Taromai (1415–1429)
Europe
- Kingdom of Bosnia - Tvrtko II, restored (1421–1433)
- Byzantine Empire - Manuel II Palaeologus (1391–1425)
- Kingdom of Castile - John II (1406–1454)
- Kingdom of England - Henry V (1413–1422)
- Kingdom of France - Valois Dynasty - Charles VI of France the Well-Beloved, later the Mad (1380–1422)
- Holy Roman Empire (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)
- Landgraviate of Thuringia (Wettin) - Friedrich IV der Friedfertige (1406–1440)
- Bavaria-Straubing (civil war) (house of Wittelsbach) -
- Kingdom of Naples - rival claimants:
- Kingdom of Poland - Władysław II Jagiełło (1386–1434)
- Russia
- Grand Duchy of Moscow - Vasily I (1389–1425)
- Kingdom of Scotland - James I (1406–1437)
- Republic of Venice - Tommaso Mocenigo, Doge of Venice (1414–1423)
Middle East and North Africa
- Aq Qoyunlu (White Sheep Turkomans) - Kara Osman (1403–1435)
- Kingdom of Cyprus - Janus (1398–1432)
- Mamluk Sultanate of Egypt - Sayf-ad-Din Tatar (1412–1421)
- Golden Horde - contested between Dawlat Berdi and Olugh Mokhammad (1419–1421)
- Ottoman Empire - Mehmet I, Ottoman Sultan (1413–1421)
- Persia (Timurid dynasty) - Shah Rukh (1405–1447)
- Empire of Trebizond - Alexius IV (1416–1429)