The Big 12 Conference sponsors championships in 23 sports, 10 men's and 13 women's. The first conference championship awarded was the 1996 softball postseason tournament championship, which was won by Oklahoma.
From 2011 through 2016, the football champion was decided by regular-season play. Previously divisional titles were awarded based on regular-season conference results, with the teams with the best conference records from the North and South playing in the Big 12 Championship Game for the Big 12 title. Following changes in NCAA rules, the Big 12 will reinstate its football championship game in 2017, with the top two teams in the final conference standings advancing to the title game. Baseball, basketball, soccer, and tennis titles are awarded in both regular-season and tournament play. Cross country, golf, gymnastics, rowing, swimming and diving, track and field, and wrestling titles are awarded during an annual meet of participating teams. The volleyball and softball titles are awarded based on regular-season play. Softball previously held a post season tournament.
All current Big 12 members sponsor baseball except Iowa State, which dropped the sport after the 2001 season. All former Big 12 members sponsored the sport throughout their tenures in the conference except Colorado, which never sponsored baseball during its time in the Big 12.
All Big 12 schools sponsor men's cross country except West Virginia.
This list reflects the official Big 12 totals by including division championships (1996–2010), conference championships won through a post season championship game (1996–2010), conference championships won through the regular season (2011–present).
The Big 12 counts shared division championships as a full championship for each school, regardless of what school went on to play in the Big 12 title game.
Big 12 Championship Game (1996-2010)
Note: While the team playing in the championship game is popularly regarded as the divisional champion, the Big 12 did officially recognize co-champions in football, just like it does in other sports. As a result, the following teams are also recognized as champions by the Big 12:
North Co-Champions: Kansas State (1999), Nebraska (2000, 2001, 2008), Iowa State (2004), Kansas (2007), Missouri (2010)
South Co-Champions: Texas (2002, 2008), Texas Tech (2008), Oklahoma State (2010), Texas A&M (2010)
2011 – present
When Nebraska and Colorado left the conference after the 2010 season, it left the conference with only 10 members. The conference did not replace the two teams and therefore eliminated the Big 12 Championship game. Under the new format, every team plays each other and the team with the best conference record wins the Big 12 title. In the event of a tie between two teams or more teams for the best conference record, then they were determined co-champions. Through the 2013 season, the winner of the head-to-head game earned the BCS berth in the Fiesta Bowl. This has since been changed and the league will recognize a tie-breaker starting in 2015. The change was made after the B12 was left out of the inaugural four-team College Football Invitational in 2014. The B12 presented TCU and Baylor as co-champs to the College Football Committee in 2014, despite Baylor having the head to head win over TCU. The move was seen as a play by the conference to get two teams invited into the new format, which backfired, leaving both teams out.