|Ab urbe condita||1914|
|Balinese saka calendar||1082–1083|
|English Regnal year||7 Hen. 2 – 8 Hen. 2|
|Chinese calendar||庚辰年 (Metal Dragon)|
3857 or 3797
— to —
辛巳年 (Metal Snake)
3858 or 3798
|- Vikram Samvat||1217–1218|
|- Shaka Samvat||1082–1083|
|- Kali Yuga||4261–4262|
|Japanese calendar||Eiryaku 2 / Ōhō 1|
|Minguo calendar||751 before ROC|
|Seleucid era||1472/1473 AG|
|Thai solar calendar||1703–1704|
1287 or 906 or 134
— to —
1288 or 907 or 135
|Wikimedia Commons has media related to 1161.|
- The Battle of Tangdao (November 16) and Battle of Caishi (November 26–27) on the Yangtze river, during the Jin–Song Wars between the Jin Dynasty and the Song Dynasty in China, result in two pivotal Song naval victories.
- December 15 – The Prince of Hailing is assassinated while on campaign. He is succeeded by Emperor Shizong.
- c. April – Bartholomew Iscanus becomes Bishop of Exeter in England.
- Godfrey Ua Raghallaigh, king of East Breifne in Ireland, dies; his son Cathal succeeds him.
- Eric Jedvardsson's murderer Magnus Henriksen is himself murdered by Karl Sverkersson, who then becomes king of Sweden.
- A Muslim offensive against the young Portuguese kingdom reaches Almada.
- The Cross of Euphrosyne, commissioned by Saint Euphrosyne of Polotsk, is created by craftsman Lazar Bohsa (The cross later went missing during World War II, and has not been recovered).
- February 3 – King Inge I of Norway (b. 1135)
- April 18 – Theobald of Bec, Norman Archbishop of Canterbury (b. c.1090)
- May 12 – Fergus of Galloway, Lord of Galloway
- June 14 – Emperor Qinzong of China (b. 1084)
- September 11 – Melisende, Queen of Jerusalem (b. 1105)
- November 23 – Adam, Abbot of Ebrach
- December 15 – Wanyan Liang, Jurchen emperor (b. 1122)
- date unknown
- Magnus Henriksson, pretender to the Swedish throne