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|Ab urbe condita||2088|
|Balinese saka calendar||1256–1257|
|English Regnal year||8 Edw. 3 – 9 Edw. 3|
|Chinese calendar||甲戌年 (Wood Dog)|
4031 or 3971
— to —
乙亥年 (Wood Pig)
4032 or 3972
|- Vikram Samvat||1391–1392|
|- Shaka Samvat||1256–1257|
|- Kali Yuga||4435–4436|
|Japanese calendar||Shōkei 4|
|Minguo calendar||577 before ROC|
|Thai solar calendar||1877–1878|
1461 or 1080 or 308
— to —
1462 or 1081 or 309
- May 2 – Otto the Merry, Duke of Austria, becomes Duke of Carinthia.
- July 30 – Battle of Boroughmuir: John Randolph, 3rd Earl of Moray defeats Guy, Count of Namur in Scotland.
- November 30 – Battle of Culblean: David Bruce defeats Edward Balliol in Scotland.
- December 1 – Abu Sa'id Bahadur Khan dies, a victim of the plague that ravages the Ilkhanate. This is an early outbreak of the Black Death. His death without a clear heir causes the Ilkhanate to disintegrate.
- Georgians under King George V (the Brilliant) finally defeat the Mongolians in a decisive battle. After that George V returns the Grave of Christ from the Muslims.
- Slavery is abolished in Sweden.
- Congress of Visegrád: The monarchs of Bohemia, Hungary, and Poland form an anti-Habsburg alliance.
- Carinthia and Carniola come under Habsburg rule. After the death of Duke Henry, the duchies are bestowed by Louis the Bavarian on the Dukes of Austria. From that time onwards, what is today Slovenia is ruled jointly with Austria until 1918.
- Pope Benedict XII begins to reform the Cistercians.
- The excommunication of Frederick III of Sicily and the interdict placed on Sicily end.
- Construction begins on the papal palace in Avignon.
- Aabenraa is chartered as a city.
- The School of Arts in Zaragoza, Spain is founded (later known as the University of Zaragoza in the 16th Century).
- May 24 – Margaret of Bohemia, Queen of Hungary (d. 1349)
- October 27 – Yi Seong-gye, Korean founder of the Joseon Dynasty
- Gülçiçek Hatun, first wife of Ottoman Sultan Murad I
- Marko Mrnjavčević, de jure Serbian king
- Milica, wife of Prince Lazar of Serbia (d. 1405)
- Tiphaine Raguenel, Breton astrologer (d. 1373)
- Continuity and Change in Medieval Persia By Ann K. S. Lambton