Nicolai Benjamin Aall (1739–1798) was a Norwegian businessman, ship-owner, property owner and timber merchant.
Niels Jacobsen Aall was a lumber merchant and shipowner who had been born in London.
[2][3][4] Aall graduated from the University of Copenhagen and took examination as a theologian in 1759, but later turned to work in his father's business.
In 1796 he and Diderik von Cappelen, brother of his son-in-law Ulrich Fredrich von Cappelen, established a rope factory (Reperbane) at Vestre Porsgrunn to meet the needs of the shipbuilding industry.
[6] [7] In the same year he was registered as the owner of eleven ships, having coped through the American Revolutionary War which had a negative impact on business.