Which English king won the Battle of Agincourt?

The English king who won the Battle of Agincourt was Henry V. He led the English army to victory on 25 October 1415, near the village of Azincourt in northern France, during the Hundred Years' War.

Henry's army was exhausted, weakened by disease, and heavily outnumbered after the siege of Harfleur. The French force, drawn largely from the nobility, attacked across muddy, constricted ground. English and Welsh longbowmen disrupted the French advance, while the crowded French men-at-arms struggled to manoeuvre. Henry personally fought in the battle, turning the victory into a powerful symbol of medieval kingship.

Agincourt is often confused with Crécy and Poitiers, two earlier English victories in the same war. Crécy was fought in 1346 under Henry's great-grandfather Edward III; Poitiers followed in 1356. Henry V's victory strengthened his claim to the French throne and helped lead to the Treaty of Troyes in 1420, although the war continued after his death.