This article relies largely or entirely on a single source. (August 2018)
|Ab urbe condita||2183|
|Balinese saka calendar||1351–1352|
|English Regnal year||8 Hen. 6 – 9 Hen. 6|
|Chinese calendar||己酉年 (Earth Rooster)|
4126 or 4066
— to —
庚戌年 (Metal Dog)
4127 or 4067
|- Vikram Samvat||1486–1487|
|- Shaka Samvat||1351–1352|
|- Kali Yuga||4530–4531|
|Japanese calendar||Eikyō 2|
|Minguo calendar||482 before ROC|
|Thai solar calendar||1972–1973|
1556 or 1175 or 403
— to —
1557 or 1176 or 404
|Wikimedia Commons has media related to 1430.|
- January 7 – Philip the Good, Duke of Burgundy, marries Isabella of Portugal.
- January 10 – Philip the Good founds the Order of the Golden Fleece.
- March 29 – The Ottoman Empire, under Murad II, captures Thessalonica after an eight-year siege.
- May 14 – The French first attempt to relieve the Siege of Compiègne.
- May 23 – Joan of Arc is captured by the Burgundians, while leading an army to relieve Compiègne.
- June 14 – William Waynflete becomes vicar of Skendleby, Lincolnshire.
- July 11 – The Battle of Trnava: The Hussites defeat the Hungarian-Moravian-Serbian army.
- October 27 – Švitrigaila succeeds his cousin, as ruler of Lithuania.
- Bratislava Castle is converted to a fortress, under Sigismund of Luxemburg.
- Optical methods are first used in the creation of art.
- With the surrender of Chalandritsa, and the citadel of Patras, to the Byzantine Despotate of the Morea, the Principality of Achaea comes to an end.
- March 10 – Oliviero Carafa, Italian Catholic cardinal (d. 1511)
- March 23 – Margaret of Anjou, queen of Henry VI of England (d. 1482)
- June 13 – Beatrice, Duchess of Viseu, Portuguese infante (d. 1506)
- June 27 – Henry Holland, 3rd Duke of Exeter, Lancastrian leader during the English Wars of the Roses (d. 1475)
- October 16
- October 28 – Richard West, 7th Baron De La Warr, son of Reginald West (d. 1475)
- November 11 – Jošt of Rožmberk, Bishop of Breslau, Grand Prior of the Order of St. John (d. 1467)
- date unknown – Hosokawa Katsumoto, Japanese warlord
- probable – Heinrich Kramer, German churchman and inquisitor (d. 1505)
- January 29 or 1427 – Andrei Rublev, Russian iconographer (possible date; b. 1360)
- August 4 – Philip I, Duke of Brabant (b. 1404)
- August 18 – Thomas de Ros, 8th Baron de Ros, English soldier and politician (b. 1406)
- October 27 – Vytautas, Grand Prince of Lithuania (b. 1352)
- date unknown