List of state leaders in 1427

See also
List of state leaders in 1426 Events of 1427 List of state leaders in 1428 State leaders by year

This is a list of heads of state, government leaders, and other rulers in the year 1427.

Africa

China (Ming dynasty) - Xuande Emperor (1425–1435)
Kingdom of Chūzan - Shō Hashi (1422–1439)
Japan (Muromachi period)
- Monarch – Emperor Shōkō (1412–1428)
- Ashikaga shogunate - vacant
Joseon (Korea) – Sejong the Great (1418–1450)
Kingdom of Nanzan – Taromai (1415–1429)

Kingdom of Aragon – Alfonso V (1416–1458)
Duchy of Burgundy – Philip III, the Good (1419–1467)
Byzantine Empire – John VIII Palaiologos (1425–1448)
Crown of Castile – John II (1406–1454)
Kingdom of England (House of Lancaster) - Henry VI (1422–1461 and 1470–1471).
Kingdom of France (House of Valois) - Charles VII (1422–1461)
Holy Roman Empire (House of Luxembourg) - Sigismund, King of the Romans (1410–1437)
- Duchy of Bar – René of Anjou (1419–1441)
- County of Hainaut and County of Holland (Civil war)
  - Jacqueline, duchess of Bavaria-Straubing and countess of Holland and Hainaut (House of Wittelsbach) (1417–1432), ruled in Gouda and surroundings
  - Philip III, the Good, Regent of Hainaut and Holland (House of Valois) (1425–1432), ruled in Hainaut and most of Holland and Zeeland
- Duchy of Lorraine – Charles II, Duke of Lorraine (1390–1431)
County of Guastalla – Guido Torelli (1406–1449)
Grand Duchy of Lithuania – Vytautas the Great (1392–1430)
Kingdom of Naples – Joanna II (1414–1435)
Kingdom of Navarre – Blanche I (1425–1441)
Ottoman (Turkish) Empire – Murad II, Ottoman Sultan (1421–1451)
Kingdom of Poland – Wladislaus II (1386–1434)
Kingdom of Portugal and the Algarves – John I (1385–1433)
Kingdom of Scotland – James I (1406–1437)
Republic of Venice – Francesco Foscari, Doge of Venice (1423–1457)