Arthur Norman Victor Harcourt Ommundsen (23 November 1878 – 30 September 1915) was a British sport shooter, born in Scandinavia but domiciled in Scotland from a young age, who competed in the 1908 Summer Olympics and 1912 Summer Olympics.In the 1908 Olympics he won a silver medal in the team military rifle event.
Four years later he won a silver medal in the team military rifle event and was seventh in the 600 metre free rifle event.
Ommundsen was killed in action during the First World War, serving as a lieutenant with the Honourable Artillery Company near Ypres.
He was buried at Brandhoek Military Cemetery nearby.