
The Big 12 Conference is a college athletic conference that is part of the NCAA's Division I. It started when the Big 8 Conference joined together with four colleges from Texas that had been part of the Southwest Conference, and the first games in the Big 12 Conference were played in 1996.
The Big 12 also has 15 "associate members", all of which play one sport in the conference.
Six schools have left the Big 12 since it was formed, but one has since returned to the conference. Missouri would return to the Big 12 in 2021 as a wrestling-only member, and Oklahoma remained a wrestling-only member after otherwise leaving for the Southeastern Conference. Colorado left in 2011 but returned in 2024.
| School | Location | Founded | Type | Nickname | Joined Big 12 | Left Big 12 | Current Conference |
|---|---|---|---|---|---|---|---|
| University of Missouri | Columbia, Missouri | 1839 | Public | Tigers | 1996 | 2012 | SEC |
| University of Nebraska–Lincoln | Lincoln, Nebraska | 1869 | Public | Cornhuskers | 1996 | 2011 | Big Ten |
| University of Oklahoma | Norman, Oklahoma | 1890 | Public | Sooners | 1996 | 2024 | SEC |
| University of Texas at Austin | Austin, Texas | 1883 | Public | Longhorns | 1996 | 2024 | SEC |
| Texas A&M University | College Station, Texas | 1876 | Public | Aggies | 1996 | 2012 | SEC |