From Infogalactic: the planetary knowledge core
|Centuries:||11th century – 12th century – 13th century|
|Decades:||1140s 1150s 1160s – 1170s – 1180s 1190s 1200s|
|Years:||1174 1175 1176 – 1177 – 1178 1179 1180|
|1177 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1177 in poetry|
|Ab urbe condita||1930|
|English Regnal year||23 Hen. 2 – 24 Hen. 2|
|Chinese calendar||丙申年 (Fire Monkey)
3873 or 3813
— to —
丁酉年 (Fire Rooster)
3874 or 3814
|- Vikram Samvat||1233–1234|
|- Shaka Samvat||1099–1100|
|- Kali Yuga||4278–4279|
|Japanese calendar||Angen 3 / Jishō 1
|Minguo calendar||735 before ROC
|Seleucid era||1488/1489 AG|
|Thai solar calendar||1719–1720|
|Wikimedia Commons has media related to 1177.|
- January – Eystein Meyla, leader of the Birkebeiner in Norway, is killed. Sverre Sigurdson (Later, King Sverre I, of Norway) becomes the new leader.
- January 13 - Leopold V becomes Duke of Austria.
- March – Treaty of Venice: Frederick I Barbarossa acknowledges Alexander III as Pope.
- August 1 – Holy Roman Empire renounces any claims on the territory of Rome.
- September 27 – Pope Alexander III sends a letter to Prester John, believing he is real.
- November 25 – Battle of Montgisard: Baldwin IV of Jerusalem and Raynald of Chatillon defeat Saladin.
- During the third year of the Angen era in Japan, a fire devastates Kyoto.
- Benedictus Abbas becomes abbot of Peterborough.
- Byland Abbey is founded in Yorkshire by the Cistercians.
- Casimir II becomes king of Poland.
- The Cham sack the Khmer capital of Angkor Wat.
- Roger de Moulins becomes Grand Master of the Knights Hospitaller.
- Moscow is burned down and its inhabitants are killed.
- Puigcerdà is founded by Alfonso II of Aragon.
- The Estonians attack Pskov during the winter.
- A civil war breaks out in Florence between the Uberti family and their consular opponent.
- February/March – Philip of Swabia, rival of Otto IV, Holy Roman Emperor (d. 1208)
- August – Baldwin V, King of Jerusalem (d. 1186)
- December 22 – Emperor Antoku of Japan (d. 1185)
- January 13 – Henry II of Austria (b. 1107)
- January – Eystein Meyla, leader of the Birkebeiner in Norway. (b. 1157)
- June – William of Montferrat, Count of Jaffa and Ascalon, father of Baldwin V of Jerusalem (b. early 1140s)
- probable – Hugh Bigod, 1st Earl of Norfolk (b. 1095)