- Jan 1 French explorer Jean-Baptiste Charles Bouvet de Lozier discovers the uninhabited Bouvet Island, the world's most remote island, near Antarctica [1]
- Jan 14 Britain and Spain sign 2nd Convention of Pardo - seeks to establish boundary between Georgia and Florida
- Feb 24 Battle of Karnal: Army of Iranian ruler Nadir Shah defeats the forces of the Mughal emperor of India, Muhammad Shah
- Mar 20 Iranian ruler Nadir Shah occupies Delhi in India and sacks the city, stealing the jewels of the Peacock Throne
- Apr 5 France and Prussia form an alliance against Austria over partitioning parts of the duchies of Jülich and Berg
- Apr 7 Dick Turpin executed in England for horse stealing
- Apr 21 Spain & Naples-Austria sign peace accord
- Jul 22 Ottoman Empire defeats Austria at Crocyka (Krotzka) in Serbia and then successfully lays siege to Belgrade
- Jul 30 Caspar Wistar begins glass manufacturing in Allowaystown, New Jersey
- Sep 1 35 Jews sentenced to life in prison in Lisbon Portugal
- Sep 9 Stono slave rebellion, South Carolina: 60 slaves kill about 20 white people before being killed or later executed. Largest slave uprising in British mainland colonies before American Revolution [1]
- Sep 18 Turkey & Austria sign peace treaty - Austria cedes Belgrade to Turks
- Oct 3 The Treaty of Nissa is signed by the Ottoman Empire and Russia at the end of the Russian-Turkish War, 1736-1739.
- Oct 19 England declares war on Spain [OS=Oct 30]
War of Jenkins' Ear
Oct 23 War of Jenkins' Ear starts: British Prime Minister, Robert Walpole, reluctantly declares war on Spain
- Oct 30 Great Britain declares war on Spain: War of Jenkins' Ear [NS=Oct 19]