1013

Events 

 By place 

 Europe 
 July  Sweyn Forkbeard, King of Denmark, having invaded England, is declared King within the Danelaw.
 December 25  Sweyn is declared King of England in London, forcing Æthelred the Unready to flee to Normandy.
 Henry II, Holy Roman Emperor, signs a peace treaty at Merseburg with Duke Bolesław I Chrobry of Poland who recognizes him as overlord.
 Henry II, Holy Roman Emperor, gathers an army at Augsburg to begin his second Italian military campaign.
 The Jews are thrown out of the caliphate of Córdoba.
 The Poles leave from Pomerania (approximate date).

 Asia 
 Estimation: Kaifeng, capital of China becomes the largest city of the world, taking the lead from Córdoba in Al-Andalus.
 The largest of the Four Great Books of Song, the Song Dynasty Chinese encyclopedia Prime Tortoise of the Record Bureau (which had been compiled since 1005), is completed in 1,000 volumes of 9.4 million written Chinese characters.

 By topic 

 Religion 
 Lyfing is appointed by Æthelred the Unready as Archbishop of Canterbury.
 The Al-Hakim Mosque is completed in Cairo.
 Beauvais changes from a county to a bishopric (approximate date).

 Births 
 Sancha of León, wife of Ferdinand I of León
 Rabbi Isaac Alfasi (Rif),Moroccan Talmudist and posek(d. 1103)

 Deaths 
 Abu al-Qasim al-Zahrawi, scholar of medicine
 Antipope John XVI

 References