1203

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1170s 1180s 1190s – 1200s – 1210s 1220s 1230s
Years:	1200 1201 1202 – 1203 – 1204 1205 1206

1203 is a year in the 13th century.

Events

April 16 – Philip II of France enters Rouen, leading to the eventual unification of Normandy and France.
April 8 – Congress in Bilino Polje, where Ban Kulin officially declared his allegiance to the Roman Catholic Church and denounced the heresy.
June 23 – Fleet of the Fourth Crusade enters Bosphorus
July 17 – Fourth Crusade captures Constantinople by assault; the Byzantine emperor Alexius III flees from his capital into exile.
August 1 – Fourth Crusade elevates Alexius IV as Byzantine emperor, after the citizens of Constantinople proclaim as emperor Isaac II Angelus (Alexius IV's father).
William de Braose, Fourth Lord of Bramber becomes the guardian of Arthur I, Duke of Brittany, and is possibly responsible for his death.
Minamoto no Sanetomo becomes shogun of the Kamakura Shogunate