Events of 1354

• February 12 – The Treaty of Stralsund settles border disputes between the duchies of Mecklenburg and Pomerania.

• October 8 – Cola di Rienzo, self-proclaimed "tribune" of Rome, is killed by an angry mob.

• The reign of John VI Cantacuzenus as Byzantine Emperor is ended, after he loses a battle to John V Palaiologos, who is restored as sole emperor.

• The Lao kingdom of Lan Xang is established.

• Sahab-ud-Din becomes Sultan of Kashmir.

• The Turks capture the cities of Kallipolis and Didymoteicho from the Byzantine Empire.

• The sultan of Morocco appoints a scribe to write an account of the travels of Ibn Battuta.

• Assassins struck down Sultan Hasan and his body is never returned.

Births

• date unknown

• *Constance of Castile, wife of John of Gaunt (d. 1394)

• *Bayezid I, sultan of the Ottoman Empire (d. 1403)

Deaths

• January 16 – Joanna of Châtillon, Duchess of Athens

• August 9 – Stephen, Duke of Slavonia, (b. 1332)

• September 7 – Andrea Dandolo, doge of Venice (b. 1306)

• October 8 – Cola di Rienzo, Roman tribune

• date unknown

• *Wu Zhen, painter (b. 1280)

• *Yusuf I, Sultan of Granada (b. 1318)