1350

January–December

• January 9 - Giovanni II Valente becomes Doge of Genoa.
• May 23 - A number of supporters of William V, Count of Holland, in his power struggle with his mother Margaret I, Countess of Holland, found the Cod League.
• August 29 - Battle of Les Espagnols sur Mer off Winchelsea: An English fleet personally commanded by King Edward III defeats a Castilian fleet.
• September 5 - Conservative noblemen in the County of Holland found the Hook League.
• September The first pestilence dies out.
• November 17 - To pay for the expenses of the revived war with the Republic of Venice, the Republic of Genoa has to subscribe a loan at an interest rate of 10%, from an association of creditors known as the Compera imposita per gerra Venetorum.

  Date unknown

• Hayam Wuruk becomes ruler of the Majapahit Empire.
• The Black Death first appears in Scotland.
• The castle of Rapperswil is largely destroyed by Rudolf Brun, mayor of the city of Zürich.
• The national law of Magnus Erikssons landslag is introduced in Sweden.