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|1366 by topic|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1366 in poetry|
|Ab urbe condita||2119|
|Balinese saka calendar||1287–1288|
|English Regnal year||39 Edw. 3 – 40 Edw. 3|
|Chinese calendar||乙巳年 (Wood Snake)|
4062 or 4002
— to —
丙午年 (Fire Horse)
4063 or 4003
|- Vikram Samvat||1422–1423|
|- Shaka Samvat||1287–1288|
|- Kali Yuga||4466–4467|
|Japanese calendar||Jōji 5|
|Minguo calendar||546 before ROC|
|Thai solar calendar||1908–1909|
1492 or 1111 or 339
— to —
1493 or 1112 or 340
Year 1366 (MCCCLXVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.
- March 13 – Henry II deposes his half-brother, Pedro of Castile, to become King of Castile.
- October 12 – Frederick III of Sicily forbids decorations on synagogues.
- October 26 – Comet 55P/Tempel–Tuttle passes 0.0229 AU (3,430,000 km; 2,130,000 mi) from Earth.
- War continues between the Hindu Vijayanagar Empire and the Muslim Bahmani Sultanate in modern-day southern India.
- Dmitri Donskoi, ruler of Moscow and Vladimir, makes peace with Dmitri Konstantinovich, former ruler of Vladimir.
- Abu Faris Abd al-Aziz I of Morocco succeeds assassinated Abu Zayyan as Sultan of the Marinid Empire in Morocco.
- The Statutes of Kilkenny are passed, aiming to curb the decline of the Hiberno-Norman Lordship of Ireland.
- The Den Hoorn brewery is founded at Leuven in the Low Countries. In 1708 this will be renamed the Brouwerij Artois, and later releases a beer named Stella Artois.
- Zhu Yuanzhang, leader of the Red Turban Rebellion that will overthrow the Yuan dynasty and establish the Ming dynasty two years later, begins building the walls for a new capital city at Nanjing.
- Thomas Fraser obtains lands in Aberdeenshire (Scotland) on which he starts the building of a towerhouse, that will later be known as Muchalls Castle.
- May 11 – Anne of Bohemia, queen of Richard II of England (d. 1394)
- August 28 – Jean Le Maingre, marshal of France (d. 1421)
- date unknown
- Lady Elizabeth FitzAlan, English noblewoman (d. 1425)
- Miran Shah, governor of Azerbaijan (d. 1408)
- Eleanor de Bohun, English noble (d.1399)
- January 25 – Henry Suso, German mystic (b. c. 1295)
- April 26 – Simon Islip, Archbishop of Canterbury
- May 20 – Maria of Calabria, Empress of Constantinople (b. 1329)
- Summer – Ming Yuzhen, founder of the rebel empire of Daxia (b. 1331)
- October 14 – Ibn Nubata, Arab poet (b. 1287)
- October 18 – Petrus Torkilsson, Archbishop of Uppsala
- ^ "Closest Approaches to the Earth by Comets". Minor Planet Center. Retrieved June 28, 2012.
- ^ Andrew, M. (2016). The Palgrave Literary Dictionary of Chaucer. Springer. p. 11. ISBN 9780230273962.
- ^ "Eleanor de Bohun, Duchess of Gloucester". Westminster Abbey. Retrieved March 18, 2019.
- ^ Rikabi, J. (1971). "Ibn Nubāta". In Lewis, B.; Ménage, V. L.; Pellat, Ch. & Schacht, J. (eds.). The Encyclopaedia of Islam, Second Edition. Volume III: H–Iram. Leiden: E. J. Brill. pp. 900–901. OCLC 495469525.