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|Centuries:||14th century – 15th century – 16th century|
|Decades:||1410s 1420s 1430s – 1440s – 1450s 1460s 1470s|
|Years:||1440 1441 1442 – 1443 – 1444 1445 1446|
|1443 by topic|
|Arts and science|
|Architecture - Art|
|State leaders - Sovereign states|
|Birth and death categories|
|Births - Deaths|
|Establishments and disestablishments categories|
|Establishments - Disestablishments|
|Art and literature|
|1443 in poetry|
|Ab urbe condita||2196|
|English Regnal year||21 Hen. 6 – 22 Hen. 6|
— to —癸亥年十二月十一日
|- Vikram Samvat||1499–1500|
|- Shaka Samvat||1365–1366|
|- Kali Yuga||4544–4545|
|- Ǹrí Ìgbò||443–444|
|Japanese calendar||Kakitsu 3
|Juche calendar||N/A (before 1912)|
|Julian calendar||1443 MCDXLIII|
|Minguo calendar||469 before ROC
|Thai solar calendar||1986|
|Wikimedia Commons has media related to: 1443|
- July 22 – Battle of St. Jakob an der Sihl: Zürich is barely defeated.
- November 3 – Battle of Niš: John Hunyadi and crusader army, defeated the Ottoman Turks and captured city of Niš; Skanderbeg left the Turkish camp and went to Albania.
- November 28 – Skanderbeg and his forces, rebelling against the Ottoman Empire, liberated Kruja, in Middle Albania, and raised the Albanian flag.
Date unknown 
- Nuno Tristão penetrates the Arguim Gulf.
- King Sejong the Great establishes Hangul as the native alphabet of the Korean language.
- Vlad II Dracul begins his second term as ruler of Wallachia, succeeding Basarab II.
- The Zhihua Si Buddhist Temple (智化寺) is built in Beijing, China at the order of Wang Zhen, the chief eunuch at the court of the Zhengtong Emperor of the Ming Dynasty.
- January 27 – Albert, Duke of Saxony (d. 1500)
- February – Anne de Beauchamp, 15th Countess of Warwick (d. 1449)
- February 4 – Philip II, Duke of Savoy (d. 1497)
- February 23 – Matthias Corvinus of Hungary (d. 1490)
- May 17 – Edmund, Earl of Rutland, brother of Kings Edward IV of England and Richard III of England (d. 1460)
- May 31 – Lady Margaret Beaufort, mother of Henry VII of England (d. 1509)
- September 8 – John de Vere, 13th Earl of Oxford, English Lancastrian leader (d. 1513)
- December 5 – Pope Julius II (d. 1513)
- January 16 – Erasmo of Narni, Italian mercenary (b. 1370)
- January 28 – Robert le Maçon, Chancellor of France
- February – Guidantonio da Montefeltro, count of Urbino (b. 1377)
- March 24 – James Douglas, 7th Earl of Douglas (b. 1371)
- April 12 – Henry Chichele, Archbishop of Canterbury
- May 9 – Niccolò Albergati, Italian Cardinal and diplomat (b. 1373)
- June 5 – Ferdinand the Saint Prince of Portugal (b. 1402)
- August 16 – Ashikaga Yoshikatsu, Japanese shogun (b. 1434)
- August 29 – Isabella of Urgell, Duchess of Coimbra (b. 1409)
- September 18 – Lewis of Luxembourg, Archbishop of Rouen
- date unknown – Infante Diogo of Portugal
- probable – Zeami Motokiyo, Japanese actor and playwright (b. 1363)