The Rock River Valley League is a former high school athletic conference with its membership concentrated in south central Wisconsin.
The Rock River Valley League was formed in 1922 by eight medium-sized high schools near the Rock River in south central Wisconsin: Cambridge, Edgerton, Fort Atkinson, Jefferson, Lake Mills, Milton, Stoughton and Whitewater.
[1] Member schools were located in Dane, Jefferson, Rock and Walworth Counties.
[5] Whitewater left the Rock River Valley League in 1937 for sole membership in the Southern Five Conference.
[8] They were replaced by the "B" team from Janesville High School, whose varsity program belonged to the larger Big Eight Conference.