1521

Millennium:	2nd millennium
Centuries:	15th century – 16th century – 17th century
Decades:	1490s 1500s 1510s – 1520s – 1530s 1540s 1550s
Years:	1518 1519 1520 – 1521 – 1522 1523 1524

1521 in topic:
Subjects: Archaeology – Architecture – Art –
Literature – Music – Poetry – Science
Leaders: State leaders – Colonial governors
Category: Establishments – Disestablishments
Births – Deaths – Works

Year 1521 (MDXXI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.

Events of 1521

March–April:Ferdinand Magellan's voyage around the world

January 3 – Pope Leo X excommunicates Martin Luther in the papal bull Decet Romanum Pontificem.
January 22 – Emperor Charles V opens the Diet of Worms.
January 28 – The Diet of Worms begins, lasting until May 25.
March 6 – Ferdinand Magellan discovers Guam.
March 16 – Ferdinand Magellan reaches the Philippines.
April 7 – Ferdinand Magellan arrives at Cebu.
April 16 – 18 – Martin Luther is examined before Emperor Charles V and the German Diet of Worms.
April 24 – Revolt of the Comuneros – Battle of Villalar: Castilian royalists defeat the rebels and execute their three leaders.
April 26 – Martin Luther leaves Worms and disappears for a year – he is rumored to be murdered, but is actually in hiding at the Wartburg Castle.
April 27 – Magellan is killed in the Philippines.
May – War breaks out between Charles V, Holy Roman Emperor and Francis I, the King of France.
May 17 – Edward Stafford, 3rd Duke of Buckingham, is executed for treason.
May 20 – Battle of Pampeluna: The French defeat the Spanish.

May 25 – The Diet of Worms ends when Charles V, Holy Roman Emperor issues the Edict of Worms, declaring Martin Luther an outlaw.
June 29 or June 30 – The first document is fully written in Romanian: the letter of Neacşu, a trader from Câmpulung, to Johannes Benkner, the mayor of Braşov, warning that the Ottoman Empire is preparing its troops to cross into Wallachia and Transylvania; the script used is Romanian Cyrillic.
June 30 – Battle of Esquiroz: French forces under Henri d'Albret, exiled King of Navarre, are defeated by the Spanish and forced to abandon their attempt to recover Henri's kingdom.

August 8 – Battle of Tenochtitlan: Hernán Cortés and allied local Indians defeat the Aztec forces of Cuauhtémoc, the last Aztec Emperor.
August 13 – Emperor Cuauhtémoc surrenders to Hernán Cortés.
August 23 – Christian II of Denmark is deposed as king of Sweden and Gustav Vasa is elected regent.
August 29 – Belgrade is captured by the Ottoman army of Suleiman I.
November 23 – Spanish–German–Papal forces under Prosper Colonna force French Marshal Odet de Lautrec to abandon Milan.

See also Category: 1521 births.

April 20 – Zhengde Emperor of China (b. 1491)
April 25 – Juan López de Padilla, Juan Bravo and Francisco Maldonado, executed Spanish rebels
April 27 – Ferdinand Magellan, Portuguese explorer (b. c. 1480)
May 10 – Sebastian Brant, German humanist and satirist (b. 1457)
May 17 – Edward Stafford, 3rd Duke of Buckingham (executed) (b. 1478)
June 15 – Tamás Bakócz, Hungarian Catholic cardinal and statesman (b. 1442)
June 21 – Leonardo Loredan, Doge of Venice (b. 1436)
July – Juan Ponce de León, Spanish conquistador (b. 1460)
August 27 – Josquin Des Prez, Flemish composer (b. c. 1450)
December 1 – Pope Leo X (b. 1475)
December 13 – King Manuel I of Portugal (b. 1469)
date unknown
- Edward Poyning, Lord Deputy to King Henry VII of England (b. 1459)
- Stephen Hawes, English poet (b. 1502)

See also Category: 1521 deaths.