Odds Ballklubb, commonly known as Odd, is a Norwegian professional football club from Skien. Originally the football section of a multi-sports club, founded in 1894 nine years after the club's founding. Most sports other than football and gymnastics were discontinued and the club became dedicated primarily to football. Odd plays in the Norwegian top division, Eliteserien, and holds the record of winning the Norwegian Football Cup the most times with twelve wins, the last coming in 2000. The club was known as Odd Grenland between 1994 and 2012. Founded in 1894, Odd is the oldest football club in Norway. As of 13 May 2017 the club was granted a membership in Club of Pioneers. It then became the first Nordic football club to be granted this membership.

Skien is a municipality in Telemark county, Norway. It is located in the traditional district of Grenland, although historically it belonged to Grenmar/Skiensfjorden, while Grenland referred the Norsjø area and Bø. The administrative centre of the municipality is the city of Skien, which is also the administrative centre of the whole county. Some of the notable villages in the municipality include Åfoss, Hoppestad, Klovholt, Luksefjell, Melum, Kilebygda, Skotfoss, Sneltvedt, and Valebø.