|Centuries:||13th century – 14th century – 15th century|
|Decades:||1310s 1320s 1330s – 1340s – 1350s 1360s 1370s|
|Years:||1338 1339 1340 – 1341 – 1342 1343 1344|
- The Queen's College, a constituent college of the University of Oxford, is founded.
- Petrarch is crowned poet laureate in Rome, the first man since antiquity to be given this honor.
- Beginning of the Breton War of Succession over the control of the Duchy of Brittany
- Margarete Maultasch, Countess of Tyrol, expels her husband John Henry of Bohemia, to whom she had been married as a child. She subsequently marries Louis of Bavaria without having been divorced, which results in the excommunication of the couple.