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|1286 by topic|
|Political entities - State leaders - Religious leaders|
|Birth and death categories|
|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
|Art and literature|
|1286 in poetry|
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- Abu Zakariya is successful in setting a principality centered on Béjaïa, which becomes a rival of the main Hafsid entity based in Tunis.
- In the Lao kingdom of Muang Sua, King Panya Leng is overthrown in a coup d'état led by his son Panya Khamphong, which is likely to have been supported by the regionally dominant Mongol Yuan Dynasty of China.
- Kublai Khan plots a final Mongol invasion of Japan, but aborts the plan due to a lack of necessary resources.
- March 19 – King Alexander III of Scotland dies in a horse accident, with only Yolande of Dreux, Queen of Scotland's unborn child and 3-year-old Margaret, Maid of Norway as heirs; this sets the stage for the First War of Scottish Independence, and the increased influence of England over Scotland.
- King Philip IV of France imposes the gabelle – a tax on salt in the form of a state monopoly – which will become immensely unpopular and grossly unequal, but persist until 1790.
- Prussians resettled in Sambia stage a famous uprising.
- King Rudolph I of Germany declares all Jews to be "serfs of the Treasury", thus negating all their political freedoms.
- The Guelph Republic of Siena allows exiled Ghibelline rebels back into the city.
- The War of the Ass is fought between the Ghisi and Sanudo families, in the Duchy of the Archipelago.
Arts and culture
- March 8 – John III, Duke of Brittany (d. 1341)
- June 30 – John de Warenne, 7th Earl of Surrey, English nobleman (d. 1347)
- date unknown – John Palaiologos, Byzantine prince and governor of Thessalonica (d. 1307)
- January 4 – Anna Komnene Doukaina, Princess of Achaea
- March 19 – Alexander III of Scotland (b. 1241)
- June 16 – Hugh de Balsham, Bishop of Ely
- July 30 – Bar Hebraeus, Syrian scholar (b. 1226)
- October 8 – John I, Duke of Brittany (b. 1217)
- November 9 – Roger Northwode, English statesman (b. 1230)
- November 22 – Eric V of Denmark (b. 1249)
- date unknown – William of Moerbeke, English Dominican classicist (b. 1215)
- date unknown – Sophia of Denmark, queen consort of Sweden (d. 1241)