1489

1489 (MCDLXXXIX) was a common year of the Julian calendar. It fell within the late Middle Ages, a period of dynastic competition, centralized monarchies, and growing transregional contacts that would soon contribute to the Renaissance and the Age of Exploration.

One of the defining political events of 1489 was the Treaty of Redon, signed in February between Henry VII of England and Francis II, Duke of Brittany. The treaty committed England to provide military support to Brittany against France and to finance the defense; Brittany in return agreed to pay for the English troops. The arrangement reflected the ongoing contest between France and its neighbors and England's interest in preventing French expansion. The English expedition did not prevent Brittany's eventual union with France, finalized in subsequent decades, with Brittany joining France in 1532.

During this period the Reconquista in the Iberian Peninsula was in progress, with the Catholic Monarchs pursuing campaigns against Muslim territories leading to the 1492 conquest of Granada. In the Atlantic, Portuguese maritime exploration continued along the West African coast, following the advances of previous years and laying groundwork for later expansion.

The papacy in 1489 was under Innocent VIII, whose tenure occurred amid broader political and dynastic alliances in Europe. The year thus sits within a transitional era marking the move from medieval toward early modern Europe.