|Ab urbe condita||1940|
|Balinese saka calendar||1108–1109|
|English Regnal year||33 Hen. 2 – 34 Hen. 2|
|Chinese calendar||丙午年 (Fire Horse)|
3883 or 3823
— to —
丁未年 (Fire Goat)
3884 or 3824
|- Vikram Samvat||1243–1244|
|- Shaka Samvat||1108–1109|
|- Kali Yuga||4287–4288|
|Japanese calendar||Bunji 3|
|Minguo calendar||725 before ROC|
|Seleucid era||1498/1499 AG|
|Thai solar calendar||1729–1730|
1313 or 932 or 160
��� to —
1314 or 933 or 161
|Wikimedia Commons has media related to 1187.|
- The Almohad caliph, Yaqub al-Mansur, reconquers the city of Gabes, Ifriqiya from the Almoravid pretender, Ali b. Ghaniya.
- May 1 – Battle of Cresson: Saladin defeats the Crusaders.
- July 4 – Battle of Hattin: Saladin defeats Guy of Lusignan, King of Jerusalem.
- September 20–October 2 – Siege of Jerusalem: Saladin captures Jerusalem.
- King Jayavarman VII of Ankor Vat defeats the Cham conquerors.
- Ghorin Muhammed conquers Punjab.
- October 29 – Pope Gregory VIII issues the bull Audita tremendi, proposing the Third Crusade.
- Alexius Branas attempts to seize Constantinople, in defiance of his master Isaac II Angelus.
- Pillage of Sigtuna: Estonians, Curonians and/or Karelians raid Sigtuna town in Sweden, and kill the archbishop Johannes.
- Knut Eriksson builds a castle on the island of Stockholm, in Sweden.
- Genoa takes Bonifacio (in Corsica) from Pisa.
- Glanvill, an official of King Henry II, describes how villeins can be free (approximate date).
- Florence takes control of the neighboring city of Empoli.
- To finance the siege of Zara, the Doge of Venice grants the benefits of the revenue from the salt tax to a consortium of creditors. Pledging the income from the Salt Office becomes a staple of the city's finance.
- October 21 – Pope Gregory VIII succeeds Pope Urban III, as the 173rd pope.
- The Cathedral of St. Jacob is consecrated in Szczecin, Pomerania.
- March 29 – Arthur I, Duke of Brittany (d. 1203)
- September 5 – King Louis VIII of France (d. 1226)
- Vladimir IV Rurikovich, Grand Prince of Kiev (d. 1239)
- Ela of Salisbury, 3rd Countess of Salisbury (d. 1261)
- Approximate date – Peter I, Duke of Brittany (d. 1251)
- May 1 – Roger de Moulins, Grand Master of the Knights Hospitaller
- May 6 – Ruben III, Prince of Armenia (b. 1145)
- July 4 – Raynald of Châtillon, Prince of Antioch (b. c. 1125)
- September/October – Count Raymond III of Tripoli (b. 1140)
- October 20 – Pope Urban III
- November 9 – Emperor Gaozong of China (b. 1107)
- November 10 – Guðrøðr Óláfsson, Norse King of Dublin and the Isles
- December 17 – Pope Gregory VIII (b. c. 1100)
- Gerard of Cremona, Italian translator of scientific works (b. c. 1114)
- Picard, Christophe (1997). La mer et les musulmans d'Occident VIIIe-XIIIe siècle. Paris: Presses Universitaires de France.
- Enn Tarvel (2007). Sigtuna hukkumine. Haridus, 2007 (7-8), p 38–41
- Colombani, Philippe (2010). Héros corses du Moyen Age. Ajaccio: Albiana. p. 173. ISBN 978-2-84698-338-9.
- Munro, John H. (2003). "The Medieval Origins of the Financial Revolution". The International History Review. 15 (3): 506–562.