|1111 by topic|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1111 in poetry|
|Ab urbe condita||1864|
|Balinese saka calendar||1032–1033|
|English Regnal year||11 Hen. 1 – 12 Hen. 1|
|Chinese calendar||庚寅年 (Metal Tiger)|
3807 or 3747
— to —
辛卯年 (Metal Rabbit)
3808 or 3748
|- Vikram Samvat||1167–1168|
|- Shaka Samvat||1032–1033|
|- Kali Yuga||4211–4212|
|Japanese calendar||Ten'ei 2|
|Minguo calendar||801 before ROC|
|Seleucid era||1422/1423 AG|
|Thai solar calendar||1653–1654|
1237 or 856 or 84
— to —
1238 or 857 or 85
- Battle of Shaizar: Sultan Muhammad I (Tapar) appoints Mawdud ibn Altuntash, Turkic governor (atabeg) of Mosul, to lead a Seljuk expedition against the Crusaders. The composite force includes Muslim contingents from Damascus, Diyarbakır, Ahlat and some Persian troops, headed by Bursuq ibn Bursuq from Hamadan. The Crusaders (16,000 men), led by King Baldwin I of Jerusalem, are cut off from their supplies, and within two weeks (due to constant Seljuk skirmishes) forced to fall back on Afamiya in northern Syria.
- Winter – The Crusaders, led by Baldwin I, besiege Tyre, without a supporting fleet. While besieging the town, a Byzantine embassy arrives in the Crusader camp. The Byzantines try to persuade Baldwin to join a coalition against Tancred, Italo-Norman prince of Galilee, but he refuses.
- April 13 – Henry V is crowned as Holy Roman Emperor by Pope Paschal II. Henry returns to Germany, where he strengthens his power by granting privileges to the German nobles of the region of the Upper Rhine.
- Almoravid forces under Syr ibn Abi Bakr capture Santarém and Sintra. The efforts of the Berbers to reconquer lost ground lead to the sack of Coimbra. The same year the city revolts against their lord in Portugal.
- The commune of Lodi Vecchio (known as Laus Pompeia) is besieged and destroyed by Milanese troops in northern Italy.
- October 5 – The 18-year-old Baldwin VII succeeds his father, Robert II, as Count of Flanders until 1119.
- Domnall Ua Briain becomes king of the Hebrides and the Isle of Man, following a request from the people of the kingdom of Munster, to send them a ruler.
- The Donglin Academy, a Chinese educational institution, is established in Wuxi during the Northern Song Dynasty.
- The Synod of Rathbreasail marks the transition of the Irish church, from a monastic to a diocesan structure.
- Afonso I (the Conqueror), King of Portugal (d. 1185)
- Agnes of Babenberg, High Duchess of Poland (d. 1163)
- Andrei Bogolyubsky, Prince of Vladimir-Suzdal (d. 1174)
- Henry II, Duke of Limburg (House of Ardenne) (d. 1167)
- Josceline de Bohon, bishop of Salisbury (d. 1184)
- Stephen of Armenia, Armenian nobleman (d. 1165)
- January 29 – Piotr I (or Peter), bishop of Wrocław
- February 22 – Roger Borsa, Italo-Norman nobleman
- March 3 – Bohemond I, Italo-Norman nobleman (b. 1054)
- April 12 – Berthold II, German nobleman (b. 1050)
- April 17 – Robert of Molesme, French abbot (b. 1028)
- June 15 – Yun Gwan, Korean general (b. 1040)
- September 27 – Vekenega, Croatian abbess
- October 5 – Robert II, Count of Flanders (b. 1065)
- October 7 – Anna Polovetskaya, Kievan princess
- October 26 – Gómez González, Castilian nobleman
- November 8 – Otto II, German nobleman
- December 19
- Cadwgan ap Bleddyn, Prince of Powys (b. 1051)
- Iorwerth ap Bleddyn, Prince of Powys (b. 1053)
- Ōe no Masafusa, Japanese poet and writer (b. 1041)
- Richard II, Italian consul and Duke of Gaeta
- Steven Runciman (1952). A History of The Crusades. Vol II: The Kingdom of Jerusalem, pp. 98–99. ISBN 978-0-241-29876-3.
- Steven Runciman (1952). A History of the Crusades. Vol II: The Kingdom of Jerusalem, p. 75. ISBN 978-0-241-29876-3.
- Picard, Christophe (2000). Le Portugal musulman (VIIIe-XIIIe siècle. L'Occident d'al-Andalus sous domination islamique. Paris: Maisonneuve & Larose. p. 109. ISBN 2-7068-1398-9.
- de Oliveira Marques, António Henrique (1998). Histoire du Portugal et de son empire colonial. Paris: Karthala. p. 44. ISBN 2-86537-844-6.
- Moody, T. W.; Martin, F. X., eds. (1967). The Course of Irish History. Cork: Mercier Press. p. 116.