- December: - King Sweyn I leads a Danish invasion of England. King Ethelred flees to Normandy, and Sweyn becomes King of England.
- The Poles withdraw from Pomerania.
- The Jews are expelled from the caliphate of Córdoba.
- German King Henry II conducts his second Italian military campaign.
- Lyfing is appointed Archbishop of Canterbury.
- Beauvais changes from a county to a bishopric.
- The Al-Hakim Mosque is completed in Cairo.