Jørgen Arthur Mathiesen (9 July 1901 – 6 December 1993) was a Norwegian landowner and businessperson in the forestry sector.
He was born in Eidsvoll as the son of landowner Haaken L. Mathiesen (1858–1930) and his wife Erikka Kiær (1866–1929).
After undertaking some extra studies, he became a company manager in the 1920s and sole owner in 1930.
Affected by the economic problems of the interwar period in Norway, the company was heavily indebted, but it survived.
They were divorced, and from April 1956 he was married to Christine Lovén, née Aall.