2024 Big 12 men's basketball tournament

The 2024 Big 12 Men's Basketball Tournament was a postseason men's basketball tournament for the Big 12 Conference. It was being played from March 12–16, 2024, in Kansas City, Missouri at T-Mobile Center. The winner received the conference's automatic bid to the 2024 NCAA Tournament. Due to a major conference realignment that significantly impacted the Big 12, it was the first and only tournament with 14 teams participating. At the beginning of the 2023–24 season, BYU, Cincinnati, Houston, and UCF joined the conference. It was the final appearance in the tournament for Texas and Oklahoma before leaving the conference. The tournament was sponsored by Phillips 66.

Seeds
All fourteen teams participated in the tournament. It was the first and only tournament with the 14-team bracket format. The top ten teams received a first round bye and the top four teams received a double bye, automatically advancing them into the quarterfinals.

Teams were seeded by record within the conference. Ties were broken using a tiebreaker system, with the first tiebreaker being best record in head-to-head matchups then the 2nd tiebreaker being head-to-head record against each team in the conference beginning with the first place team and working down.