Events in the year 1718 in Norway.
Incumbents Monarch: Frederick IV.
Events 29 August - 10,000 men under the command of Lieutenant-general Carl Gustaf Armfeldt attacked Trøndelag from Jemtland. 30 November - King Karl XII was shot and killed at the Siege of Fredriksten fortress.
Births 26 February - Johan Ernst Gunnerus, bishop and botanist (died 1773) 29 December - Ole Nilsen Weierholt, wood carver (died 1792) Anders Olsen, trader, explorer and colonial administrator (died 1786)
Deaths 8 February – Henrik Adeler, civil servant and politician (born 1660). 16 May – Jonas Danilssønn Ramus, priest and historian (born 1649) 9 September – Caspar Herman Hausmann, general, lumber merchant and squire (born 1653) 30 November – King Karl XII of Sweden (born 1682)
References