IF Elfsborg

IF Elfsborg is a professional football club based in Borås, Sweden, playing in the Allsvenskan and affiliated to the Västergötlands Fotbollförbund. The club was founded in 1904 as Borås Fotbollslag by a group of 19 youngsters, and it took the name IF Elfsborg in 1906, when the founders felt there were too many teams with "Borås" in their name. Its yellow and black colours are taken from Älvsborg Regiment, and its motto is "Vi Tillsammans" (We together).

The club's home ground is Borås Arena, where it has played since 17 April 2005, and it is also called Elfsborg Fortress. Before that, the team played at Ramnavallen and then at Ryavallen from 1941.

The club's most successful period came in the 1930s and 1940s, when striker Sven Jonasson led the team and several players were in the Sweden national team. Elfsborg won the Allsvenskan title for the first time in 1936, and became the first Swedish team to go straight from the second level to the championship in 1961.