Year 1484 (MCDLXXXIV) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar.
March 26 – William Caxton, the first printer of books in English, prints his translation of Aesop's Fables.
May 14 – Charles VIII of France (Charles l'Affable) is crowned.
July 6 – Portuguese sea captain Diogo Cão finds the mouth of the Congo River.
July 22 – Battle of Lochmaben Fair: A 500-man raiding party led by Alexander Stewart, Duke of Albany, and James Douglas, 9th Earl of Douglas, is defeated by forces loyal to Albany's brother James III of Scotland; Douglas is captured.
August 29 – Pope Innocent VIII succeeds Pope Sixtus IV as the 213th pope.
September 21 –Treaty of Nottingham: Three-year truce between the kingdoms of England and Scotland signed.
December 5 – Pope Innocent VIII issues the Papal bull Summis desiderantes affectibus giving the inquisition a mission to hunt heretics and witches in Germany, led by Heinrich Kramer and Jacob Sprenger.
The first sugar mill becomes operational in the Gran Canaria.
The first cuirassier units (kyrissers) are formed in Austria.
The King of Portugal appoints a commission of mathematicians to perfect tables to help seamen find their latitude.
Maximilian I, Duke of Burgundy, orders foreign merchants to leave Bruges. Most merchants move to Antwerp, greatly contributing to its growth as an international trading center.
The Imperial Army of Frederick III, Holy Roman Emperor is defeated by the Hungarians in the Battle of Leitzersdorf.
January 1 – Huldrych Zwingli, Swiss religious reformer (d. 1531)
January 17 – George Spalatin, German religious reformer (d. 1545)
February 21 – Joachim I Nestor, Elector of Brandenburg (1499–1535) (d. 1535)
March 4 – George, Margrave of Brandenburg-Ansbach (d. 1543)
April 12
Rana Sanga (d. 1527)
Antonio da Sangallo the Younger, Italian architect (d. 1546)
April 23 – Julius Caesar Scaliger, Italian humanist scholar (d. 1558)
June 25 – Bartholomeus V. Welser, German banker (d. 1561)
July 11 – Ottaviano de' Medici, Italian politician (d. 1546)
August 24 – Bartolomé de las Casas, Spanish bishop in Mexico (d. 1566)
November 7 – Jón Arason, The last Icelandic Catholic bishop (d. 1550)
November 29 – Joachim Vadian, Swiss humanist and reformer (d. 1551)
December 13 – Paul Speratus, German Lutheran (d. 1551)
date unknown – Hosokawa Takakuni, Japanese military commander (d. 1531)
date unknown – Luisa de Medrano, Spanish scholar (d. 1527)
March 4 – Saint Casimir, Prince of Poland (b. 1458)
April 9 – Edward of Middleham, Prince of Wales (b. c. 1473)
July 11 – Mino da Fiesole, Italian sculptor (b. c. 1429)
August 12
Pope Sixtus IV (b. 1414)
George of Trebizond, Greek philosopher (b. 1395)
October 2 – Isabel of Cambridge, Countess of Essex, descendant of Edward III of England
December – Premislav of Tost, Silesian ruler (b. 1425)
date unknown
William Sinclair, 1st Earl of Caithness (b. 1410)
Luigi Pulci, Italian poet (b. 1432)
Barbara von Ottenheim, German sculpture model (b. 1430)
1484 Wikipedia (Text) CC BY-SA