1454
| Years: 1451 1452 1453 – 1454 – 1455 1456 1457 | |
| Decades: 1420s 1430s 1440s – 1450s – 1460s 1470s 1480s | |
| Centuries: 14th century – 15th century – 16th century | |
Events
- February 4 – In the Thirteen Years' War, the Secret Council of the Prussian Confederacy sends a formal act of disobedience to the Grand Master.
- March 6 – Casimir IV of Poland renounces allegiance to the Teutonic Knights
- March 27 – Richard Plantagenet, Duke of York becomes Protector for the insane King Henry VI of England
- September 18 – In the battle of Chojnice, the Polish army is defeated by a smaller but more professional Teutonic army during Thirteen Years' War.
- December – King Henry having regained his sanity, the Duke of York is dismissed as Protector
- Francesco Sforza forms a triple alliance between the duchy of Milan, republic of Florence and kingdom of Naples
Births
- March 9 – Amerigo Vespucci, explorer and cartographer (d. 1512)
Deaths
- July 20 – King John II of Castile (b. 1405)
- John Kemp, Archbishop of Canterbury
Categories: 1454