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|Ab urbe condita||2136|
|Balinese saka calendar||1304–1305|
|English Regnal year||6 Ric. 2 – 7 Ric. 2|
|Chinese calendar||壬戌年 (Water Dog)|
4079 or 4019
— to —
癸亥年 (Water Pig)
4080 or 4020
|- Vikram Samvat||1439–1440|
|- Shaka Samvat||1304–1305|
|- Kali Yuga||4483–4484|
|Japanese calendar||Eitoku 3|
|Minguo calendar||529 before ROC|
|Thai solar calendar||1925–1926|
1509 or 1128 or 356
— to —
1510 or 1129 or 357
|Wikimedia Commons has media related to 1383.|
- May 17 – King John I of Castile and Leon marries Beatrice of Portugal.
- July 7 – The childless James of Baux, ruler of Taranto and Achaea, and last titular Latin Emperor, dies. As a result:
- Charles III of Naples becomes ruler of Achaea (now southern Greece).
- Otto, Duke of Brunswick-Grubenhagen, the widower of Joanna I of Naples, becomes ruler of Taranto (now eastern Italy).
- Louis I, Duke of Anjou inherits the claim to the Latin Empire (now western Turkey), but never uses the title of Emperor.
- October 22 – King Fernando I of Portugal dies, and is succeeded by his daughter, Beatrice of Portugal. A period of civil war and anarchy, known as the 1383–85 Crisis, begins in Portugal, due to Beatrice being married to King John I of Castile and Leon.
- Dan I succeeds his father as Prince of Wallachia. He is the ancestor of the House of Dăneşti.
- The Teutonic Knights recommence war against pagan Lithuania.
- Rao Chanda succeeds Rao Biram Dev, as Rathore ruler of Marwar (now in western India).
- Löwenbräu beer is first brewed.
- Completion of the original inner courtyard of Farleigh Hungerford Castle in Somersetshire, England.
- The Wat Phra That Doi Suthep Temple is built in present-day Thailand, by King Kuena of Lanna.
- Construction of the Bastille is completed in Paris, France.
- March 1 – Amadeus VI, Count of Savoy (b. 1334)
- March 3 – Hugh III of Arborea
- June 5 – Dmitry Konstantinovich, Russian prince (b. 1324)
- June 8 – Thomas de Ros, 4th Baron de Ros, English Crusader (b. 1338)
- June 15 – John VI Kantakouzenos, Byzantine Emperor (b. 1292)
- July 7 James of Baux, titular Latin Emperor
- October 22 – King Fernando I of Portugal (b. 1345)
- December 7 – Wenceslaus I, Duke of Luxembourg (b. 1337)
- December 23 – Beatrice of Bourbon, Queen of Bohemia (b. 1320)
- date unknown