Skien/Porsgrunn is a Norwegian urban area located in Grenland in southern Telemark.
The urban area covers parts of three municipalities: Skien, Porsgrunn and Bamble. The population is 85.408.
Contrary to local beliefs in Porsgrunn, the area is more commonly referred to as Skien/Porsgrunn, rather than Porsgrunn/Skien.