Skien is a city and municipality in Telemark county, Norway. It is part of the traditional region of Grenland. The administrative centre of the municipality is the city of Skien. Skien is also the administrative centre of Telemark county.

The municipality of Skien was established on 1 January 1838 (see formannskapsdistrikt). The rural municipalities of Gjerpen and Solum were merged into the municipality of Skien on 1 January 1964.

The conurbation of Skien and Porsgrunn is considered by Statistics Norway to be the seventh largest city in Norway straddling an area of three municipalities: Skien municipality (about 52% of the population), Porsgrunn (35%), and Bamble (11.5%). The area is home to more than 90,000 people.

Skien was historically Norway's most important port town for shipping timber. The city was the birthplace and boyhood home of playwright Henrik Ibsen, and many of his famous dramas are set in in places reminiscent of 19th century Skien.

Read more about Skien:  History, Notable Residents