The Mississippi Valley Conference (MVC) is a high school athletic conference in southwest Wisconsin. Founded in 1989, the conference and its member schools belong to the Wisconsin Interscholastic Athletic Association and are located in the La Crosse-Onalaska-Sparta combined statistical area.
The Mississippi Valley Conference was formed in 1989 to accommodate for the growing attendance in schools in traditional rural-based conferences and shorten travel distances for its members. Holmen and Onalaska joined from the Coulee Conference, Sparta and Tomah from the South Central Conference, and La Crosse Central High School and Logan High School from the Big Rivers Conference. Shortly after, in 1997, Aquinas High School joined from the Central Wisconsin Catholic Conference of the Wisconsin Independent Schools Athletic Association, a private school athletic league, to become the conference's seventh member. It is the second high school athletic conference in Wisconsin to carry this name, the previous incarnation was based in west central Wisconsin and was in existence from 1933 to 1965.
In 2014, West Salem began competition in the Mississippi Valley Conference for football only, remaining in the Coulee Conference for all other sports. Aquinas left the MVC's football roster in 2019 when they joined the Southwest Wisconsin Activities League as associate members for that sport. The next year, a comprehensive realignment of Wisconsin high school football conferences was implemented by the WIAA with input from the Wisconsin Football Coaches Association to run on a two-year cycle. All six of the MVC's public high schools (Central, Holmen, Logan, Onalaska, Sparta and Tomah) remained in the conference with associate members River Falls (Big Rivers) and West Salem (Coulee) filling out the ranks. River Falls and West Salem returned to their respective conferences for the 2022-2023 realignment cycle with two schools from the Badger Conference (Baraboo and Reedsburg) replacing them. This alignment will stay in effect through at least the 2026-2027 competition cycle.
The MVC sponsors 19 varsity sports. They are:
The Mississippi Valley Conference has a number of intense rivalries, both based on proximity, and performance.
In addition to these main rivalries, many other rivalries have developed based on different sports and success. In the early 2000s, Holmen and Aquinas had fierce competitions in Boys' Basketball in which tickets were sold out days after going on sale. Additionally, in the early 1990s, Onalaska Vs. Central was a heated matchup in Boys' Basketball. That rivalry was rekindled in the 2010s as both teams regularly competed for state bids. In wrestling, Holmen Vs. Sparta and Holmen Vs. Tomah have come and gone. In Boys' Ice Hockey, Onalaska and Aquinas/Holmen/G-E-T/C-FC hold a battle for the Omni Center rivalry, as both teams play in the same venue.
Many non-conference rivalries are also in the MVC. Onalaska Vs. West Salem, Logan and Central Vs. Eau Claire Memorial and North, Tomah Vs. Black River Falls, and Holmen Vs. G-E-T are all annual football games. Aquinas maintains matchups with old conference members from their WISAA days.
In many different sports, particularly but not limited to football, basketball, and wrestling, the three big rivalries will frequently be played on the same days, coining the phrase Rivalry Week in football and Rivalry Night in other sports. These rivalries are Central Vs. Logan, Holmen Vs. Onalaska, and Sparta Vs. Tomah. Occasionally, Aquinas will be inserted into a city match up or against Holmen or Onalaska on a Rivalry Night.