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|Ab urbe condita||2170|
|Balinese saka calendar||1338–1339|
|English Regnal year||4 Hen. 5 – 5 Hen. 5|
|Chinese calendar||丙申年 (Fire Monkey)|
4113 or 4053
— to —
丁酉年 (Fire Rooster)
4114 or 4054
|- Vikram Samvat||1473–1474|
|- Shaka Samvat||1338–1339|
|- Kali Yuga||4517–4518|
|Japanese calendar||Ōei 24|
|Minguo calendar||495 before ROC|
|Thai solar calendar||1959–1960|
1543 or 1162 or 390
— to —
1544 or 1163 or 391
|Wikimedia Commons has media related to 1417.|
- July 27 – Avignon Pope Benedict XIII is deposed, bringing to an end the Great Western Schism.
- August 12 – King Henry V of England begins using English in correspondence (back to England from France whilst on campaign), marking the beginning of this king's continuous usage of English in prose, and the beginning of the restoration of English as an official language for the first time since the Norman Conquest, some 350 years earlier.
- November 14 – Pope Martin V succeeds Pope Gregory XII (who abdicated in 1415), as the 206th pope.
- The earliest extant description of Tynwald Day; the annual meeting of the Isle of Man's parliament (Tynwald) is written down in law.
- The use of street lighting is first recorded in London, England when Sir Henry Barton, the mayor, orders lanterns with lights to be hung out on the winter evenings, between Hallowtide and Candlemas.
- Mircea cel Bătrân loses Dobruja to the Ottomans and pays them tribute, thus preventing Wallachia from becoming an Ottoman province.
- Chimalpopoca, son of Huitzilihuitl, succeeds his father as Tlatoani of Tenochtitlan
- February 23
- May 25 – Catherine of Cleves, Duchess consort regent of Guelders (d. 1479)
- June 19 – Sigismondo Pandolfo Malatesta, lord of Rimini (d. 1468)
- November 8 – Philipp I, Count of Hanau-Lichtenberg (1458–1480) (d. 1480)
- November 19 – Frederick I, Count Palatine of Simmern from 1459 until 1480 (d. 1480)
- November 23 – William FitzAlan, 16th Earl of Arundel, English politician (d. 1487)
- date unknown
- January – Art mac Art MacMurrough-Kavanagh, King of Leinster (b. 1357)
- March 5 – Manuel III Megas Komnenos, Emperor of Trebizond (b. 1364)
- April 29 – Louis II of Naples (b. 1377)
- September 4 – Robert Hallam, English Catholic bishop
- September 22 – Anne of Auvergne, Sovereign Dauphine of Auvergne and Countess of Forez (b. 1358)
- September 26 – Francesco Zabarella, Italian jurist (b. 1360)
- October 18 – Pope Gregory XII
- November 17 – Gazi Evrenos, Ottoman general (b. 1288)
- December 14 – John Oldcastle, English Lollard leader
- probable – Huitzilíhuitl, Aztec ruler of Tenochtitlan