2025 Big 12 men's basketball tournament
Classification	Division I
Season	2024–25
Teams	16
Site	T-Mobile Center Kansas City, Missouri
Television	ESPN Networks
Big 12 men's basketball tournaments ← 2024 2026 →

The 2025 Big 12 Men's Basketball Tournament is a postseason men's basketball tournament for the Big 12 Conference. It is scheduled to be played from March 11–15, 2025, in Kansas City, Missouri at T-Mobile Center.^[1] The winner will receive the conference's automatic bid to the 2025 NCAA Tournament. Due to a major conference realignment that significantly impacted the Big 12, it will be the first tournament with 16 teams participating. At the beginning of the 2024–25 season, Arizona, Arizona State, Colorado, and Utah joined the conference. The tournament will be sponsored by Phillips 66.

All sixteen teams will participate in the tournament. It will be the first with the 16-team bracket format. The top eight teams will receive a first round bye and the top four teams will receive a double bye, automatically advancing them into the quarterfinals.^[2]

Teams will be seeded by record within the conference. Ties will be 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.^[3]

Notes: # – Big 12 regular season champions, and tournament No. 1 seed
‡ – Received a double-bye into the conference tournament quarterfinal round
† – Received a single-bye into the conference tournament second round
Overall records include all games played in the 2025 Big 12 tournament.