The club was founded on 25 September 1911 as Strømmen FK. The name was changed to FK Norrøna in 1914. In 1923 the club merged with Strømmen IL and took the name IL Norrøna. In 1935 it incorporated the club Strømmen BK, founded in the 1920s, and reverted its name back to Strømmen FK. On 27 June 1945, the club merged with AIF club Strømmen AIL, founded 1928, and got its current name.
Football
The club reached the Norwegian Football Cup semi-final in 1957, and played in the Norwegian top flight from 1949 to 1955 and from 1956 to 1961, as well as in 1986 and 1988. The club hosts the record for lowest attendance in the highest league, 202. They play their matches at Strømmen Stadion. In 2006, Strømmen won their 3. divisjon group. In the qualification match for the 2. divisjon they met Ullern. Strømmen won the first leg, 6–2, on home ground, and they lost the second leg, 4–2, but won 8–6 on aggregate, and achieved their promotion for the 2007 season. Strømmen got relegated in 2007, but retained their spot since Odd Grenland 2 got demoted to the 3. divisjon, following Odd's first team being relegated from the top tier, Tippeligaen. Thomas Berntsen was hired by Strømmen on 3 August 2008, and with Berntsen as head coach, Strømmen avoided relegation to the 3. divisjon. Ahead of the 2009 season, Petter Myhre was named co-coach together with Berntsen. With Berntsen and Myhre as coaches, Strømmen won their 2009 2. divisjon group and was promoted to 1. divisjon. In 2010 Strømmen finished three points behind a promotion play-offs spot. In the decisive match of the 2011 season, Strømmen avoided relegation with a 6–1 win against Nybergsund. After the 2011 season, Berntsen was replaced by Erland Johnsen.
Former cross-country skierThomas Alsgaard competed for Strømmen IF in steeplechase and long-distance running in his younger days. The club's only Norwegian champion in athletics is Otto Rui. He won the hammer throw in 1987, and also took national medals in 1985, 1988 and 1989. Sidsel Kjellås is their winningest domestic medalist, with silver medals in the 80 metres hurdles in 1964, pentathlon in 1965, and the tetrathlon in 1966 and a bronze in the standing long jump in 1965. Birgit Tofthagen took a national silver medal in the high jump in 1964, and Unni Lundby took a bronze medal in the 200 metres in 1969. Strømmen's women' team in the 4 x 100 metres relay also took a national silver medal in 1965 and a bronze in 1970. The club hosted the 1992 Norwegian Cross-Country Championships.
