The 2011 Big 12 Conference baseball tournament was held at RedHawks Ballpark in Oklahoma City, OK from May 25 to May 29, 2011.
The winners of each of those tournaments faced each other in a one-game match for the championship.
Missouri and Texas A&M faced each other in the championship game on Sunday, May 29, 2011.
Texas A&M beat Missouri 10–9 in 10 innings to win the 2011 Big XII Tournament.
This was the second consecutive year that Texas A&M won the conference tournament in extra innings on a walk-off home run.