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This article is about the year 1011. For the number, see 1011 (number).
|Centuries:||10th century – 11th century – 12th century|
|Decades:||980s 990s 1000s – 1010s – 1020s 1030s 1040s|
|Years:||1008 1009 1010 – 1011 – 1012 1013 1014|
|1011 by topic|
|Lists of leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Ab urbe condita||1764|
|Bahá'í calendar||−833 – −832|
|English Regnal year||N/A|
|Chinese calendar||庚戌年 (Metal Dog)
3707 or 3647
— to —
辛亥年 (Metal Pig)
3708 or 3648
|- Vikram Samvat||1067–1068|
|- Shaka Samvat||933–934|
|- Kali Yuga||4112–4113|
|Japanese calendar||Kankō 8
|Minguo calendar||901 before ROC
|Thai solar calendar||1554|
|Wikimedia Commons has media related to 1011.|
- June 11 – The Byzantine army under the catapan Basil Mesardonites takes Bari from the rebellious Lombard lord Melus.
- September 29 – Danes capture Canterbury after a siege, taking Ælfheah, Archbishop of Canterbury, as a prisoner.
- Ermengol II succeeds Ermengol I as Count of Urgell
- Albert II, Count of Namur succeeds Albert I
- The German king Henry II enfeoffes Adalbero, Duke of Carinthia with the Carinthian duchy, including the rule over the March of Verona (or in 1012).
- Byrhtferth of Ramsey Abbey in England writes his Manual (Enchiridion) on the divine order of the universe and time.
- Baghdad Manifesto: Al-Hakim bi-Amr Allah's descent from Ali ibn Abi Talib is disputed.
- Ibn al-Haytham (Alhazen), a famous Persian scientist working in Egypt, feigns madness in fear of angering Al-Hakim, and is kept under house arrest until 1021. During this time he begins writing his influential Book of Optics.
- In Georgia, Bagrat III dispossesses Sumbat III of Klarjeti, who dies thereafter.
- The Chinese Guangyun rime dictionary is compiled under Emperor Zhenzong of Song.
- Emperor Sanjō ascends to the throne of Japan.
- Eleanor of Normandy, a Norman noblewoman and the daughter of Richard II of Normandy (possible date; d. after 1071)
- Ralph the Staller, earl of East Anglia (d. 1068)
- Robert I, Duke of Burgundy (d. 1076)
- Shao Yong, Song Dynasty philosopher, cosmologist, poet and historian (d. 1077)
- February 23 – Willigis, Archbishop of Mainz and a statesman of the Holy Roman Empire (b. c. 940)
- November 21 – Emperor Reizei of Japan (b. 950)
- December 12 or December 15 – Conrad I, Duke of Carinthia (b. c. 975)
- Emperor Ichijō of Japan (b. 980)
- Albert I, Count of Namur (b. c. 950)
- Armentarius, Galician bishop (b. 983)
- Sumbat III of Klarjeti, Georgian prince of the Bagratid dynasty of Tao-Klarjeti and the last sovereign of Klarjeti
- Yohannan V, Patriarch of the Church of the East
- Norwich, John Julius (1967). The Normans in the South 1016-1130. London: Longmans.
- Palmer, Alan; Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 48–49. ISBN 0-7126-5616-2.
- Toumanoff, Cyril (1967). Studies in Christian Caucasian History, p. 498. Georgetown University Press.