|Ab urbe condita||1932|
|Balinese saka calendar||1100–1101|
|English Regnal year||25 Hen. 2 – 26 Hen. 2|
|Chinese calendar||戊戌年 (Earth Dog)|
3875 or 3815
— to —
己亥年 (Earth Pig)
3876 or 3816
|- Vikram Samvat||1235–1236|
|- Shaka Samvat||1100–1101|
|- Kali Yuga||4279–4280|
|Japanese calendar||Jishō 3|
|Minguo calendar||733 before ROC|
|Seleucid era||1490/1491 AG|
|Thai solar calendar||1721–1722|
1305 or 924 or 152
— to —
1306 or 925 or 153
|Wikimedia Commons has media related to 1179.|
- 23–30 August – Battle of Jacob's Ford, Syria: Saladin destroys the still-in-construction Castle of Chastellet at Jacob's Ford, killing 700 knights and taking 800 civilians captive.
- June 19 – Battle of Kalvskinnet (outside Nidaros, Norway): Earl Erling Skakke is killed, and the battle changes the tide of the civil wars.
- Afonso I is recognized as King of Portugal by Pope Alexander III, bringing Portugal the protection of the Catholic Church against the Leonese monarchy.
- November 1 – Philip II is crowned King of France. He assumes his office, however, in the next year, following the death of his father Louis VII.
- The city of Aberdeen is chartered by William the Lion.
- A large offensive, by the Almohad army in southern Portugal, aims at the reconquest of the Alentejo. Further north, a fleet led by Abd Allah b. Ishaq b. Jami is sails to attack Lisbon, but is repelled by the Portuguese admiral D. Fuas Roupinho, near the Cape Espichel. The Portuguese admiral later manages to enter in the harbor of Ceuta, and destroy a number of Muslim ships. It is the beginning of a four-year naval conflict between the Almohads and Portuguese.
- The Third Council of the Lateran condemns Waldensians and Cathars as heretics, institutes a reformation of clerical life, and creates the first "ghettos" for Jews. It also rules that the Pope must receive ⅔ of the cardinals' votes to be elected.
- Westminster School is founded by the monks of Westminster Abbey (by papal command) in England.
- The Drigung Kagyu school of Kagyu Buddhism is founded.
- April 4 - Fariduddin Ganjshakar, Islamic saint (d. 1266)
- John of Ibelin, the Old Lord of Beirut (approximate date; d. 1236)
- Michael of Chernigov (approximate date; d. 1246)
- Constance of Aragon, queen of Hungary, Holy Roman Empress (d. 1222)
- Shimazu Tadahisa, warlord of the Shimazu clan of Japan (d. 1227)
- William IV Talvas, Count of Ponthieu (d. 1221)
- Yaqut al-Hamawi, Arab geographer (d. 1229)
- Picard C. (1997) La mer et les musulmans d'Occident au Moyen Age. Paris: Presses Universitaires de France, p.77