1423

Events 
April 27 – Hussite Wars: Battle of Horic – The Taborites decisively beat the Utraquists.
 July 31 –  Hundred Years' War: Battle of Cravant – The French army is defeated at Cravant on the banks of the river Yonne.
 August 23 – English with Burgundian soldiers defeat the French, who were supported by the Scots, at Verneuil. The English-Burgundian alliance was strengthened by the marriage of the Duke of Bedford to Anne of Burgundy. Anne was sister of Philip the Good, Duke of Burgundy. Philip the Good had allied Burgundy with England after his father was murdered in 1419 by the French Dauphin, son of Charles VI of France.
 According to the 1421 theory, the return of Zheng He's fleets to China.

 Births 
May 30 – Georg Purbach, German astronomer and mathematician (died 1461)
June 2 – Ferdinand I of Naples (died 1494)
July 3 – King Louis XI of France (died 1483)
August 24 – Thomas Rotherham, English cleric (died 1500)
November 24 – Baron Raß von Balzers, descendant of Frederick II

 Deaths 
May 23 – Avignon Pope Benedict XIII (born 1328)
October 20 – Henry Bowet, Archbishop of York
December 15 – Michael Küchmeister von Sternberg, Grand Master of the Teutonic Knights
date unknown – Richard Whittington, Lord Mayor of London (born 1358)