Idratsforeningen Lyseng Fodbold (Danish pronunciation: [ˈlyseŋˀ]), commonly known as IF Lyseng, is an association football club based in the suburb of Hojbjerg, Aarhus Municipality, Denmark, that competes in the Denmark Series, the fourth tier of the Danish football league system. The club's name comes from its home ground, which is located on the former land of Lysenggard, a farm in Hojbjerg. The football department is the most notable one of Idratsforeningen Lyseng, a major multi-sport club who compete in football, handball, volleyball, swimming and beach volleyball, among others.
Founded in 1970 as a merger of Skade Boldklub and Kragelund Idratsforening, the club is known for their iconic orange team colour, which was initially chosen as a compromise, as its parents clubs wore red and green, respectively. IF Lyseng is affiliated to DBU Jutland, the regional football association. The team plays its home matches at Lyseng Idratscenter, where it has been based since 1975. The club spent most of its history in the lower regional tiers of Danish football, but reached promotion to the Danish 2nd Division, the third tier, for the first time in its history ahead of the 2017–18 season.
IF Lyseng has 1,200 paying members, making it the one of the largest sports clubs in Jutland and Denmark as a whole.