Joen Jacobsen (1714 – 12 January 1768) was a Norwegian master builder.
He was born in Skien to carpenter Jacob Vetlesen. He was responsible for the construction of a number of churches in Telemark, including Langesund Church (from 1753 onwards), Vestre Porsgrunn Church (1756–1758), ÃÂstre Porsgrunn Church ( finished 1760) and Solum Church (finished 1766). He also restored Borgestad Manor in 1760, and built KammerherregÃÂ¥rden, which was destroyed by fire in 1901 and rebuilt as the current Porsgrunn City Hall.