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|Ab urbe condita||2142|
|Balinese saka calendar||1310–1311|
|English Regnal year||12 Ric. 2 – 13 Ric. 2|
|Chinese calendar||戊辰年 (Earth Dragon)|
4085 or 4025
— to —
己巳年 (Earth Snake)
4086 or 4026
|- Vikram Samvat||1445–1446|
|- Shaka Samvat||1310–1311|
|- Kali Yuga||4489–4490|
|Japanese calendar||Kakei 3 / Kōō 1|
|Minguo calendar||523 before ROC|
|Thai solar calendar||1931–1932|
1515 or 1134 or 362
— to —
1516 or 1135 or 363
|Wikimedia Commons has media related to 1389.|
- February 24 – Queen Margaret of Norway and Denmark defeats Albert, King of Sweden in battle and becomes ruler of all three kingdoms. Albert is deposed from the Swedish throne and taken prisoner.
- May 3 – Richard II took control of England, away from the Lords Appellant.
- May 19 – Vasili I becomes Grand Prince of Moscow after the death of his father, Dmitry Donskoy.
- June – The Käpplinge murders take place in Stockholm in Sweden.
- June 15 – Battle of Kosovo: Serbs score a victory over the Ottoman Empire. Both Sultan Murad I and the Serbian Prince Lazar are killed in the battle.
- July 18 – Hundred Years' War: The kingdoms of England and France sign the Truce of Leulinghem, ending the second phase of the war, and bringing a 13-year peace.
- November 2 – Pope Boniface IX succeeds Pope Urban VI, as the 203rd pope.
- Mircea I of Wallachia and Polish king Władysław II Jagiełło sign their first treaty, to protect their countries against Ottoman expansion.
- Goryeo Revolution in Korea (1388–1392): King Chang of Goryeo is forced from power and replaced by King Gongyang. The ten-year-old Chang and his predecessor, U, are both assassinated later in the year.
- Hadji II is restored as Mamluk Sultan of Egypt, after overthrowing Sultan Barquq.
- With the backing of Antipope John XXIII, supporters of Louis II overthrow the underage King Ladislaus as King of Naples. The new Pope Boniface IX recognises Ladislaus's claim to the throne.
- Wikramawardhana succeeds Hayam Wuruk, as ruler of the Majapahit Empire (now Indonesia).
- The unpopular Sultan Tughluq Khan of Delhi is murdered and succeeded by his brother, Abu Bakr Shah.
- Biri II succeeds Kade Alunu as King of the Kanem-Bornu Empire (now eastern Chad and Nigeria), and the Empire loses its land in present-day Chad to the Bilala.
- Sandaki overthrows Magha II, as Mansa of the Mali Empire.
- Abd ar-Rahmân II succeeds Musa II as ruler of the Ziyanid Dynasty, in present-day western Algeria.
- Abu Tashufin II succeeds his nephew, Abu Hammu II, as ruler of the Abdalwadid Dynasty in present-day eastern Algeria.
- Carmo Convent is built in Lisbon, Portugal.
- March 1 – Antoninus of Florence, Italian archbishop (d. 1459)
- June 20 – John of Lancaster, 1st Duke of Bedford, regent of England (d. 1435)
- April 10 – Cosimo de' Medici, ruler of Florence (d. 1464)
- November 9 – Isabella of Valois, queen consort of England (d. 1409)
- December 5 – Zbigniew Oleśnicki, Polish cardinal and statesman (d. 1455)
- December 24 – John VI, Duke of Brittany (d. 1442)
- May 19 – Dmitry Donskoy, Grand Prince of Muscovy (b. 1350)
- June 15 (in the Battle of Kosovo)
- October 15 – Pope Urban VI (b. 1318)
- date unknown