The Horizon League is a NCAA conference that plays in the NCAA Division I. The conference is headquartered in Indianapolis, Indiana and features universities and colleges from the Great Lakes Region. While it plays many sports, it has never played football.
The Horizon League was founded in 1979 as the Midwestern City Conference (MCC) with six members. None of these schools are in the league now. The school that has been in the league the longest is Detroit Mercy, which joined in 1980 (when it was known as simply "Detroit").
The conference changed its name in 1985 to Midwestern Collegiate Conference. In 1993, the largest conference expansion in NCAA history that did not involve a merger was announced. Six schools left the Mid-Continent Conference, now known as The Summit League, to join the Midwestern Collegiate Conference for the 1994–95 school year. In June 2001, the conference changed its name to the current Horizon League to avoid confusion with the "other" MCC (which did not become The Summit League until 2007).
Today, eight of the Horizon League's 11 full members (those playing most, if not all, of their sports in the league) are former members of The Summit League. The exceptions are Detroit Mercy, Northern Kentucky, and Robert Morris.
The most recent changes to the conference membership happened in the 2020s. First, in 2020, Purdue Fort Wayne and Robert Morris joined. In 2022, UIC left to join the Missouri Valley Conference. Most recently, the conference announced in February 2025 that Northern Illinois, which had left in 1997, would return in 2026. Northern Illinois returned to the Horizon League at the same time that the school's football team joined the Mountain West Conference.
The Horizon League now has 12 full members.
| School | Location | Founded | Type | Nickname | Joined |
|---|---|---|---|---|---|
| Cleveland State University | Cleveland, Ohio | 1964 | Public | Vikings | 1994 |
| University of Detroit Mercy | Detroit. Michigan | 1877 | Private | Titans | 1980 |
| University of Wisconsin–Green Bay (Green Bay) | Green Bay, Wisconsin | 1965 | Public | Phoenix | 1994 |
| Indiana University Indianapolis (IU Indy) | Indianapolis, Indiana | 1969 | Public | Jaguars | 2017 |
| University of Wisconsin–Milwaukee (Milwaukee) | Milwaukee, Wisconsin | 1956 | Public | Panthers | 1994 |
| Northern Illinois University | DeKalb, Illinois | 1895 | Public | Huskies | 2026 |
| Northern Kentucky University | Highland Heights, Kentucky | 1968 | Public | Norse | 2015 |
| Oakland University | Rochester, Michigan | 1957 | Public | Golden Grizzlies | 2013 |
| Purdue University Fort Wayne | Fort Wayne, Indiana | 1964 | Public | Mastodons | 2020 |
| Robert Morris University | Moon Township, Pennsylvania | 1921 | Private | Colonials | 2020 |
| Wright State University | Dayton, Ohio | 1964 | Public | Raiders | 1994 |
| Youngstown State University | Youngstown, Ohio | 1908 | Public | Penguins | 2001 |
A total of 13 schools have been full members, but are no longer in the conference.
Nicknames are those used when the schools were conference members.
NCAA conferences often have one or more "associate" members that play only a limited number of sports in the conference, usually one. For most of its history, the Horizon League has not had associate members. The first such member was Belmont, which was a men's soccer member from 2014 to 2018. More recently, the Horizon greatly expanded its men's tennis league. The Ohio Valley Conference (OVC) merged its men's tennis league into the Horizon in 2022. At the same time, Belmont returned to the conference for men's tennis, and Chicago State moved men's and women's tennis into the Horizon.
Lindenwood shut down its men's tennis team after the 2023–24 season. At the same time, Chicago State joined the Northeast Conference, which sponsors tennis for both sexes. However, it kept both tennis teams in the Horizon League through the 2024–25 season, honoring its affiliation contract with that conference. Eastern Illinois shut down its men's tennis team after the 2024–25 season. Tennessee Tech, which had joined Horizon men's tennis alongside other OVC teams in 2022, left after 2025–26 when it joined the tennis-sponsoring Southern Conference. Oral Roberts joined for men's tennis at the same time Tennessee Tech left.
| School | Location | Founded | Type | Nickname | Horizon League sport(s) | Joined | Main conference |
|---|---|---|---|---|---|---|---|
| Belmont University | Nashville, Tennessee | 1890 | Private | Bruins | Men's tennis | 2022 | MVC |
| Oral Roberts University | Tulsa, Oklahoma | 1963 | Private | Golden Eagles | Men's tennis | 2026 | Summit League |
| University of Southern Indiana | Evansville, Indiana | 1965 | Public | Screaming Eagles | Men's tennis | 2022 | OVC |
| Tennessee State University | Nashville, Tennessee | 1912 | Public | Tigers | Men's tennis | 2022 | OVC |
As noted above, current men's tennis member Belmont once housed its men's soccer team in the Horizon League.
| School | Location | Founded | Type | Nickname | Horizon League sport | Joined | Left | Main conference | Conference in former Horizon sport |
|---|---|---|---|---|---|---|---|---|---|
| Belmont University | Nashville, Tennessee | 1890 | Private | Bruins | Men's soccer | 2014 | 2018 | MVC | |
| Chicago State University | Chicago, Illinois | 1867 | Public | Cougars | Men's and women's tennis | 2022 | 2025 | NEC | |
| Eastern Illinois University | Charleston, Illinois | 1895 | Public | Panthers | Men's tennis | 2022 | 2025 | OVC | None |
| Lindenwood University | St. Charles, Missouri | 1827 | Public | Lions | Men's tennis | 2022 | 2024 | OVC | None |
| Tennessee Tech University | Cookeville, Tennessee | 1915 | Public | Golden Eagles | Men's tennis | 2022 | 2026 | SoCon | |