|Centuries:||10th century – 11th century – 12th century|
|Decades:||980s 990s 1000s – 1010s – 1020s 1030s 1040s|
|Years:||1010 1011 1012 – 1013 – 1014 1015 1016|
- 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).
- 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.
- 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).