|Ab urbe condita||1814|
|Balinese saka calendar||982–983|
|English Regnal year||N/A|
|Chinese calendar||庚子年 (Metal Rat)|
3757 or 3697
— to —
辛丑年 (Metal Ox)
3758 or 3698
|- Vikram Samvat||1117–1118|
|- Shaka Samvat||982–983|
|- Kali Yuga||4161–4162|
|Japanese calendar||Kōhei 4|
|Minguo calendar||851 before ROC|
|Seleucid era||1372/1373 AG|
|Thai solar calendar||1603–1604|
1187 or 806 or 34
— to —
1188 or 807 or 35
- Spring – Robert de Grandmesnil, his nephew Berengar, half-sister Judith (future wife of Roger I), and eleven monks of the Abbey of Saint-Evroul, are banished by Duke William II (the Bastard) of Normandy for violence, and travel to Southern Italy.
- Summer – Norman forces led by Duke Robert Guiscard and his brother Roger I invade Sicily. They land unseen during the night and surprise the Saracen army. Guiscard conquers Messina and marches into central Sicily.
- June 28 – Count Floris I is ambushed on a retreat from Zaltbommel and killed by German troops at Nederhemert. Most of West Frisia (later part of County of Holland) is conquered and annexed by the Holy Roman Empire.
- Sosols (a tribe in Estonia) destroy the Kievan Rus' fortification of Yuryev in Tartu, and carry out a raid on Pskov.
- July 27 – Pope Nicholas II dies after a 2-year pontificate at Florence. He is succeeded by Alexander II as the 156th pope of the Catholic Church in Rome.
- The Speyer Cathedral is consecrated in Speyer (modern Germany).
- January 28 – Spytihněv II, duke of Bohemia (b. 1031)
- May 5 – Humbert of Moyenmoutier, French cardinal
- June 28 – Floris I, count of Friesland (west of the Vlie)
- July 13 – Beatrice I, German abbess of Quedlinburg (b. 1037)
- July 27 – Nicholas II, pope of the Catholic Church
- Abu Sa'id Gardezi, Persian geographer and historian
- Adelmann, bishop of Brescia (approximate date)
- Ali ibn Ridwan, Arab physician and astronomer
- Burkhard I (or Burchardus), German nobleman
- Conrad III (or Konrad III), German nobleman
- Henry I (or Heinrich I), German count palatine
- Rajaraja Narendra, Indian ruler (b. 1022)
- Rúaidhri Ua Flaithbheartaigh, king of Iar Connacht
- Song Qi, Chinese statesman and historian (b. 998)
- John Julius Norwich, The Normans in the South 1016–1130 (London: Solitaire Books, 1981), pp. 146–47.
- Mäesalu, Ain (2012). "Could Kedipiv in East-Slavonic Chronicles be Keava hill fort?" (PDF). Estonian Journal of Archaeology. 1: 199. Retrieved December 27, 2016.