1355

Events 
 January 7 – Portuguese king Afonso IV sends three men to kill Ines de Castro, beloved of his son prince Pedro – Pedro revolts and incites a civil war.
 February 10 – The St. Scholastica's Day riot broke out in Oxford, England, leaving 63 scholars and perhaps 30 locals dead in two days.
 April – Philip of Anjou marries Mary of Naples, daughter of Charles of Valois, duke of Calabria, and Mary of Valois.
 April 5 – Charles IV crowned emperor in Rome.
 April 18 – In Venice, the Council of Ten beheads Doge Marin Falier for conspiring to kill them.
 September 1 – Tvrtko I writes in castro nostro Vizoka vocatum from old town Visoki.

 A small Scottish and French force invade Northumberland, loot the city of Berwick-upon-Tweed and defeat a small English force in a skirmish at Nisbet, Berwickshire.

 Births 
 January 7 – Thomas of Woodstock, 1st Duke of Gloucester, son of King Edward III of England (died 1397)
 August 16 – Philippa Plantagenet, Countess of Ulster
 Manuel Chrysoloras, Byzantine humanist (died 1415)
 Konrad von Jungingen, 25th Grand Master of the Teutonic Order

 Deaths 
 April 18 – Doge Marin Falier, Italian ruler (executed)
 August 3 – Bartholomew de Burghersh, 1st Baron Burghersh
 December 5 – John III, Duke of Brabant (born 1300)
 Inês de Castro, lover of King Peter I of Portugal (murdered)
 Stefan Dusan, King of Serbia