1311

January–December

• January 6 - Henry VII is crowned King of Italy in Milan, and on February 12 crushes a local rebellion.
• March 15 - Battle of Halmyros: The Catalan Company defeats Walter V, Count of Brienne and his forces, to take control of the Duchy of Athens.
• April 7 - Battle of Wopławki: The Teutonic Knights defeat the Grand Duchy of Lithuania.
• August 16 - The Parliament of England presents the Ordinances of 1311 to King Edward II ; these substitute the 21 Lord Ordainers for the King as the effective government of the country.
• October 16 - The Council of Vienne begins.

  Date unknown

• Bolingbroke Castle passes to the House of Lancaster.
• Lincoln Cathedral in England is completed; with the spire reaching around 525 feet, it becomes the world's tallest structure, a record it holds until the spire is blown down in 1549.

  Births

• January 28 or 1312 - Joan II of Navarre, queen regnant of Navarre
• June 24 or 1314 - Philippa of Hainault, queen of Edward III of England
• August 13 - King Alfonso XI of Castile
• July 1 - Liu Bowen, Chinese military strategist, officer, statesman and poet
• date unknown
• * Peter I, Duke of Bourbon
• * Margaret II, Countess of Hainaut

  Deaths

• January 27 - Külüg Khan, Emperor Wuzong of Yuan
• March 3 - Antony Bek, bishop of Durham
• March 15 - at the Battle of Halmyros:
• * Walter V, Count of Brienne, Duke of Athens
• * Thomas III d'Autremencourt, Lord of Salona, Marshal of Achaea
• * Albert Pallavicini, Margrave of Bodonitza
• * George I Ghisi, Triarch of Euboea, Baron of Chalandritsa, Lord of Tinos, Mykonos, Serifos and Keos
• May 29 - James II of Majorca
• August 13 - Pietro Gradenigo, Doge of Venice
• September 5 - Amadeus Aba, Hungarian oligarch
• December 14 - Margaret of Brabant, German queen consort
• date unknown
• * David VIII of Georgia
• * Arnold of Villanova, Spanish alchemist and physician
• probable - Bernard Saisset, Occitan bishop of Pamiers