1354

January–December

• Early in the year - Ibn Battuta returns from his travels at the command of Abu Inan Faris, sultan of Morocco, who appoints a scribe to write an account of the adventures.
• February 12 - The Treaty of Stralsund settles border disputes between the duchies of Mecklenburg and Pomerania.
• March 2 - During the night between 1 and 2 March, a strong earthquake destroyed the city of Gallipoli and its city walls, weakening its defenses, along with destroying the neighboring villages and towns in the area.
• March - Within a month after the devastating earthquake the Ottomans besieged and captured the town of Gallipoli, making it the first Ottoman stronghold in Europe and the staging area for Ottoman expansion across the Balkans.
• October 8 - Cola di Rienzo, self-proclaimed "tribune" of Rome, is killed by an angry mob.
• August 16 - War of the Straits: The Venetian-ruled town of Poreč is sacked by the Genoese under Paganino Doria, who carry off the relics of saints Eleutherius and Maurus of Parentium to Genoa, where they were deposited at the church of San Matteo.
• November 4 - War of the Straits: The Genoese fleet under Paganino Doria defeats and captures the entire Venetian fleet under Niccolò Pisani at the Battle of Sapienza.
• December 10 - The reign of John VI Kantakouzenos as Byzantine Emperor is ended, after John V Palaiologos retakes Constantinople and is restored as sole emperor.

  Date unknown

• After 24 years of struggling for independence, since the Battle of Posada, Nicholas Alexander of Wallachia becomes a vassal to Hungarian king Louis I.
• Sahab-ud-Din becomes Sultan of Kashmir.

  Births

• Constance of Castile, wife of John of Gaunt
• Denis, Lord of Cifuentes, infante of Portugal
• Alonso Enríquez, Spanish nobleman
• Frederick III, Count of Moers, German nobleman
• Gilbert de Greenlaw, Scottish bishop
• Jean de Grouchy, Norman knight
• Margaret of Joinville, French noblewoman
• Thomas de Morley, 4th Baron Morley, English nobleman
• Eric IV, Duke of Saxe-Lauenburg
• Roger de Scales, 4th Baron Scales, English nobleman
• Catherine of Vendôme, French noblewoman
• Violante Visconti, Italian noblewoman
• Walram IV, Count of Nassau-Idstein, German nobleman

  Deaths

January–March

• January 8 - Charles de La Cerda
• January 16 - Joanna of Châtillon, Duchess of Athens

  April–June

• June 1 - Kitabatake Chikafusa, Japanese court noble

  July–September

• August 9 - Stephen, Duke of Slavonia, Hungarian prince
• September 7 - Andrea Dandolo, doge of Venice

  October–December

• October 5 - Giovanni Visconti, Italian Roman Catholic cardinal
• October 8 - Cola di Rienzo, Roman tribune
• October 19 - Yusuf I, Sultan of Granada
• date unknown - Wu Zhen, Chinese painter