| Year: | 2009 |
| Conference: | Big 12 Conference |
| Shortconference: | Big 12 |
| Division: | I |
| Teams: | 8 |
| Format: | Two four-team round-robin groups |
| Ballpark: | AT&T Bricktown Ballpark |
| City: | Oklahoma City, Oklahoma |
| Champions: | Texas |
| Titlecount: | 4th |
| Coach: | Augie Garrido |
| Coachcount: | 4th |
| Mvp: | Brandon Loy |
| Mvpteam: | Texas |
| Attendance: | 72,511 |
The 2009 Big 12 Conference baseball tournament was held at AT&T Bricktown Ballpark in Oklahoma City, Oklahoma, United States, from May 20 to May 24, 2009. This was the fourth year the conference used the round robin tournament setup. The winners of each group at the end of the round robin faced each other in a one-game match for the championship. The Texas Longhorns defeated the Missouri Tigers, 12–7 to win the championship.
Source:[1]
| Place | Seed | Team | Conference | Overall | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W | L | T | % | GB | W | L | T | % | ||||
| 1 | 1 | Texas | 17 | 9 | 1 | – | 50 | 16 | 1 | |||
| 2 | 2 | 17 | 10 | 0 | 0.5 | 43 | 20 | 0 | ||||
| 3 | 3 | Missouri | 16 | 11 | 0 | 1.5 | 35 | 27 | 0 | |||
| 4 | 4 | Kansas State | 14 | 11 | 1 | 2.5 | 43 | 18 | 1 | |||
| 5 | 5 | 15 | 12 | 0 | 2.5 | 39 | 24 | 0 | ||||
| 6 | 6 | 14 | 13 | 0 | 3.5 | 37 | 24 | 0 | ||||
| 7 | 7 | 12 | 15 | 0 | 5.5 | 25 | 32 | 0 | ||||
| 8 | 8 | 10 | 16 | 0 | 7 | 30 | 26 | 0 | ||||
| 9 | – | 9 | 16 | 0 | 7.5 | 34 | 24 | 0 | ||||
| 10 | – | 8 | 19 | 0 | 9.5 | 25 | 28 | 1 | ||||
| Position | Player | School | |
|---|---|---|---|
| C | J. T. Wise | Oklahoma | |
| 1B | Brandon Belt | Texas | |
| 2B | Joey Hainsfurther | Baylor | |
| 3B | Tony Thompson | Kansas | |
| SS | Brandon Loy | Texas | |
| OF | Ryan Lollis | Missouri | |
| OF | Jamie Johnson | Oklahoma | |
| OF | Kyle Colligan | Texas A&M | |
| DH | Dustin Dickerson | Baylor | |
| SP | Chance Ruffin | Texas | |
| SP | Andrew Doyle | Oklahoma | |
| RP | Craig Fritsch | Baylor | |
| MOP | Brandon Loy | Texas |