January – March

• January 12 – The marriage of Bastam, the 8-year old son (and eldest child) of the Ikhanate ruler of Iran, Oljaitu Khan, to Uljay Qutlugh Khatun, the 7-year-old daughter and the only surviving child of the previous Ikhanate, the late Ghazan Khan, takes place in Tabriz. The betrothal of the two children had been arranged by Ghazan and Öljaitü on September 17, 1303.
• January 16 – William de Hamilton is formally invested as Lord Chancellor, the highest-ranking elected official at the time in England.
• January 23 – Henry II Kőszegi, the Ban of Slavonia, completes his conquest of Croatian territory in Požega and Valkó, and issues a charter of annexation from his encampment at Valkószentgyörgy.
• February 26 – In Spain, King James II of Aragon and King Ferdinand IV of Castile have a summit at the Monastery of Santa María de Huerta in Castile. Attending also from Castile are Ferdinand's uncle, Prince John; Juan Núñez II de Lara of the House of Lara; Ferdinand's cousin Juan Manuel; and Prince Afonso of Portugal. ^[1]
• February 28 – The 52nd English Parliament assembles.
• March 19 – Amir Chupan, the Duke of Yi, is betrothed to Dowlandi Khatun, the daughter of Öljaitü.
• March 20 – King Edward dissolves the 52nd Parliament.
• March 25 – Juan Manuel of Castile is made Lord of Alarcón.

April – June

• April 30 – Byzantine Emperor Michael IX Palaiologos invites Roger de Flor, Italian nobleman and adventurer, to Adrianople and has him assassinated there. Along with de Flor, 300 horsemen and some 1,000 foot soldiers who accompanied him are killed. The plan is executed by Alan mercenaries, who at that time are enlisted in the Byzantine army. The murder of the commander of the Catalan Company does not have the expected results. Not only is the Company not disbanded, but its attacks on Byzantine territory becomes more severe. The period of destruction in Macedonia and Thrace after the murder of de Flor becomes known as the "Catalan Revenge".^[2]
• May 19 – In Spain, the Treaty of Elche is signed between King James II of Aragon and King Ferdinand IV of Castile to revise the borders set out nine months earlier in the Treaty of Torrellas. ^[1]
• June 5 – Pope Clement V, formerly the Archbishop of Bordeaux, succeeds Pope Benedict XI as the 195th pontiff of the Catholic Church. He will reign until 1314.
• June 20 – Öljaitü, the new Mongol Ikhanate, marries Qutlughshah Khatun, daughter of the Kerait Emir Irinjin.
• June 21 – At 14 years old, Wenceslaus III becomes ruler of Hungary, Bohemia, and Poland upon the death at age 33 of his father, King Wenceslaus II.
• June 27 – In recognition of the marriage of his daughter to Öljaitü the Mongol Ikhanate, Mongol Irinjin is appointed Viceroy of Anatolia. ^[3]

July – September

• July 10 – Battle of Apros: Byzantine forces (some 6,000 men) under Michael IX Palaiologos, consisting of a large contingent of Alans and Turcopoles (Christianized Turks), attack the Catalan Company near Apros.^[4] Michael orders a general cavalry charge, but the Turcopoles desert en bloc to the Catalans. During the battle, the Byzantines are defeated (with many losses from the crossbowmen) and Michael is injured but escapes the field.^[5]
• July 15 – King Edward of England summons a new Parliament, to assemble on September 15.
• August 3 – William Wallace, Scottish rebel leader and knight, is captured near Glasgow at Robroyston, by English troops led by John de Menteith. He is transported to London and led, crowned mockingly with laurel, in procession to Westminster Hall.
• August 23 – After a three week trial at Westminster, William Wallace is convicted of treason and of atrocities against civilians in war. After the trial, he is dragged through the streets of Smithfield in London and hanged, drawn and quartered – strangled by hanging – but cut down while still alive, emasculated, disemboweled (with his bowels burned before him), beheaded, and then cut into four parts. Wallace's head is placed on a spike above the London Bridge, and his limbs are displayed separately, in Newcastle, Berwick, Stirling, and Perth.^[6]
• September 15 – King Edward I of England issues ordinances for the government of the Kingdom of Scotland. King Edward issues the first commission of Trailbaston – which empowers him to appoint judicial commissions to punish crimes (such as homicide, theft, arson, and rape) and certain trespasses. Edward adds also conspiracy to the list of presentments.^[7]
• September 19 – At Tabriz (now in Iran) Öljaitü the Mongol Ikhanate, receives the Mongol ambassador from Yuan dynasty China.

October – December

• October 9 – King Wenceslaus III marries Viola Elizabeth of Teschen, daughter of Duke Mieszko I, and abandons his claim to Hungary in favor of Otto III of Bavaria. Meanwhile, Wladyslaw II the Elbow-High, claimant to the Polish throne, begins conquering Polish territories.^[8][9]
• November 24 – In India, Mahalakadeva, King of Malwa, is killed while attempting to flee the invaders from the Delhi Sultanate. Ayn al-Mulk Multani takes control of the kingdom as the Sultanate's Governor of Malwa.
• December 8 – At Tabriz, the Mongol Ikhanate Öljaitü receives the ambassador sent by Toqta, Khan of the Golden Horde that rules territory comprising much of what is now Russia.
• December 20 – Battle of Amroha: Mongol forces (some 30,000 men) invade the Delhi Sultanate again in northern India. Sultan Alauddin Khalji dispatches a cavalry force led by Vizier Ghazi Malik, to repulse the Mongols. During the battle (somewhere in the Amroha district), the Delhi forces inflict a crushing defeat upon the invaders. Many Mongols are taken prisoner and incorporated into the Delhi army.^[10]

By place