From Infogalactic: the planetary knowledge core
|Centuries:||12th century – 13th century – 14th century|
|Decades:||1250s 1260s 1270s – 1280s – 1290s 1300s 1310s|
|Years:||1277 1278 1279 – 1280 – 1281 1282 1283|
|1280 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1280 in poetry|
|Ab urbe condita||2033|
|English Regnal year||8 Edw. 1 – 9 Edw. 1|
|Chinese calendar||己卯年 (Earth Rabbit)
3976 or 3916
— to —
庚辰年 (Metal Dragon)
3977 or 3917
|- Vikram Samvat||1336–1337|
|- Shaka Samvat||1202–1203|
|- Kali Yuga||4381–4382|
|Japanese calendar||Kōan 3
|Minguo calendar||632 before ROC
|Thai solar calendar||1822–1823|
|Wikimedia Commons has media related to 1280.|
- June 23 – Reconquista – Battle of Moclín: Troops of the Emirate of Granada defeat those of the Kingdom of Castile and Kingdom of León.
- Construction on the northern section of the Grand Canal of China is begun.
- The final expansion of Lincoln Cathedral in England is completed.
- King Magnus III of Sweden founds a Swedish nobility by enacting a law accepting a contribution of a cavalry-member in lieu of ordinary tax payments.
- Tsar Ivan Asen III of Bulgaria flees from Tarnovo, ending the Asen dynasty in Bulgaria.
- Syria attempts to secede from the Mamluk Sultanate of Egypt, but Al Mansur Qalawun defeats the rebels and keeps Syria within the Egyptian sultanate.
- The second of two main surveys of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is completed; it began in 1279.
- Turin is conquered by Thomas III of Savoy, becoming the capital of the House of Savoy.
- Approximate date
- February 10 – Margaret II, Countess of Flanders (b. 1202)
- May 9 – Magnus VI of Norway
- August 22 – Pope Nicholas III (b. 1218)
- November 15 – Albertus Magnus, German theologian