1439

Year 1439 (MCDXXXIX) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.

January–December

 * May 4 – Battle of Grotnik: Władysław III's royal army defeats the Hussite movement in Poland.
 * June 29 – Date of Venerable Macarius' Miracle of the Moose, according to Russian hagiographers.
 * July 6 – Pope Eugene IV issues the Bull of Union with the Greeks, proclaiming the end of the East–West Schism. The bull is repudiated by most eastern bishops shortly thereafter.
 * September 8 – Cardinal Giovanni Vitelleschi captures Foligno, ending Trinci's signoria.
 * September 29 or October 1 – Eric of Pomerania, King of Sweden, Denmark and Norway, is declared deposed in Sweden. Karl Knutsson Bonde continues to serve as Regent of Sweden.
 * November 12 – In England, Plymouth becomes the first town incorporated by the English Parliament.

Date unknown

 * Johannes Gutenberg develops printing with movable type at Mainz at about this date.
 * The Great Ordinance is adopted by the French Estates-General. This measure grants the king the exclusive right to raise troops, and establishes the taxation measure known as the taille, in support of a standing army.
 * The Council of Florence is moved to Florence.
 * At the Portuguese Cortes, Peter, Duke of Coimbra is appointed Regent of the Kingdom.

Births

 * March 3 – Ashikaga Yoshimi, brother of Shōgun Ashikaga Yoshimasa (d. 1491)
 * April 3 – Ludwig II, Count of Württemberg-Urach, German noble (d. 1457)
 * May 29 – Pope Pius III (d. 1503)
 * July 18 – John V, Duke of Saxe-Lauenburg, German duke (d. 1507)
 * July 26 – Sigismund, Duke of Bavaria, member of the Wittelsbach dynasty (d. 1501)
 * August 10 – Anne of York, Duchess of Exeter, Duchess of York, second child of Richard Plantagenet (d. 1476)
 * date unknown – Hua Sui, Chinese inventor and printer (d. 1513)

Deaths

 * April 30 – Richard de Beauchamp, 13th Earl of Warwick, English military leader (b. 1382)
 * June 24 – Duke Frederick IV of Austria (b. 1382)
 * September 12 – Sidi El Houari, Algerian imam (b. 1350)
 * October 20 – Ambrose the Camaldulian, Italian theologian
 * October 27 – Albert II of Germany, Holy Roman Emperor (b. 1397)
 * December 30 – Margaret Holland, English noblewoman (b. 1385)