|Ab urbe condita||1918|
|Balinese saka calendar||1086–1087|
|English Regnal year||11 Hen. 2 – 12 Hen. 2|
|Chinese calendar||甲申年 (Wood Monkey)|
3861 or 3801
— to —
乙酉年 (Wood Rooster)
3862 or 3802
|- Vikram Samvat||1221–1222|
|- Shaka Samvat||1086–1087|
|- Kali Yuga||4265–4266|
|Japanese calendar||Chōkan 3 / Eiman 1|
|Minguo calendar||747 before ROC|
|Seleucid era||1476/1477 AG|
|Thai solar calendar||1707–1708|
1291 or 910 or 138
— to —
1292 or 911 or 139
|Wikimedia Commons has media related to 1165.|
- November 23 – Pope Alexander III enters Rome.
- December 9 – William the Lion succeeds his brother Malcolm IV as king of Scotland; he will reign until his death in 1214.
- Emperor Rokujō ascends to the throne of Japan at the age of one.
- Byzantine Emperor Andronicus I escapes from prison.
- Henry II of England begins an affair with Rosamund Clifford.
- Battle of Crogen: Henry II of England invades Wales, but is defeated and forced to retreat.
- The Muslims take Caesarea Philippi from the Crusaders.
- Leipzig gains city and market privileges.
- The town of Pistoia obtains the appellation of "imperio fidelissima" from Frederick I, as faithful to the emperor.
- Construction of the Liuhe Pagoda of Hangzhou, China, is completed in this year, during the Song Dynasty.
- The adventurer Gerald the Fearless, vassal of the king of Portugal, seizes the city Evora by surprise. The same year (or soon after), he takes Cacéres, Trujillo, Montánchez, Lobon, Moura, Monsaraz and Alconchel.
- The Archbishop of Lund appoints Fulco as the first Bishop of Estonia, marking the early beginning of the gradual introduction of Christianity in Estonia.
- August 21 – King Philip II of France (d. 1223)
- October – Joan of England, Queen of Sicily, daughter of Henry II of England (d. 1199)
- November – Henry VI, Holy Roman Emperor (d. 1197)
- Ibn Arabi, Sufi philosopher (d. 1240)
- Henry I, Duke of Brabant (d. 1235)
- Albert of Buxhoeveden, German soldier (d. 1229)
- Phillipe de Plessis, Grand Master of the Knights Templar (d. 1209)
- February 7 – Marshal Stephen of Armenia
- April 11 – King Stephen IV of Hungary
- September 5 – Emperor Nijō of Japan (b. 1143)
- December 9 – King Malcolm IV of Scotland (b. 1141)
- date unknown