- Feb 22 Roger Borsa, King of Sicily
- Mar 7 Bohemond I, Prince of Otranto, ruler of Antioch, one of the leaders of the First Crusade, dies
- Oct 5 Robrecht II of Jerusalem, Count of Flanders (1st Crusader), dies
- Nov 8 Otto II, Count of Habsburg, one of the founders of the Habsburg family, murdered
- Dec 19 al-Ghazali, Muslim philosopher, theologian, jurist and mystic (The Revival of the Religious Sciences), dies (b.c. 1058)