Year 1509 (MDIX) was a common year starting on Monday of the Julian calendar.
The Battle of Agnadello, also known as Vailà, was one of the most significant battles of the War of the League of Cambrai and one of the major battles of the Italian Wars.
Jacques de La Palice was a French nobleman and military officer. His full name and titles were Jacques II de Chabannes, Lord of La Palice, of Pacy, of Chauverothe, of Bort-le-Comte and of Héron. In 1511, he received the title of Grand Master of France.
Antoine, known as the Good, was Duke of Lorraine from 1508 until his death in 1544.
Bartolomeo d'Alviano was an Italian condottiero and captain who distinguished himself in the defence of the Venetian Republic against the Holy Roman Emperor Maximilian.
Philip of Savoy, Duke of Nemours was a French nobleman. He was a son of Philip II, Duke of Savoy, and his second wife Claudine de Brosse. He was a half-brother of Louise of Savoy, the mother of Francis I of France. He was the founder of the Nemours branch of the house of Savoy which eventually settled in France.
Andrea Gritti was the Doge of Venetian Republic from 1523 to 1538, following a distinguished diplomatic and military career.
Gian Giacomo Trivulzio was an Italian aristocrat and condottiero who held several military commands during the Italian Wars.
The Siege of Padua was a major engagement early in the War of the League of Cambrai.
Louis II de la Trémoille was a French general. He served under three kings: Charles VIII, Louis XII and Francis I. He was killed in combat at the Battle of Pavia.
Charles d'Amboise, Seigneur de Chaumont was a French nobleman, who acted as French governor of Milan (1503–1511) during the reign of Louis XII and as a French commander during the War of the League of Cambrai.
Arzago d'Adda is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about 30 kilometres (19 mi) east of Milan and about 25 kilometres (16 mi) southwest of Bergamo.
Palazzo Pignano is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 35 kilometres (22 mi) southeast of Milan and about 45 kilometres (28 mi) northwest of Cremona.
Pandino is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 30 kilometres (19 mi) east of Milan and about 50 kilometres (31 mi) northwest of Cremona.
Rivolta d'Adda is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 25 kilometres (16 mi) east of Milan and about 70 kilometres (43 mi) northwest of Cremona.
Torlino Vimercati is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 35 kilometres (22 mi) east of Milan and about 45 kilometres (28 mi) northwest of Cremona.
Vailate is a comune (municipality) in the Province of Cremona in the Italian region Lombardy, located about 35 kilometres (22 mi) east of Milan and about 50 kilometres (31 mi) northwest of Cremona. As of 31 December 2004, it had a population of 4,299 and an area of 9.8 square kilometres (3.8 sq mi).
Pandolfo IV Malatesta, nicknamed Pandolfaccio was an Italian condottiero and lord of Rimini and other cities in Romagna. He was a member of the House of Malatesta and a minor player in the Italian Wars.
An incomplete series of events, births and deaths which occurred in Italy in 1509:
Teodoro Trivulzio (1458–1531) was an Italian condottiero and marshal of France.
