The Cowboys played their home games at Allie P. Reynolds Stadium as a member of the Big 12 Conference.

They were led by head coach Josh Holliday, in his fourth season at Oklahoma State.

The 2015 Oklahoma State Cowboys baseball team notched a 38–20 (14–8) regular season record and finished second in the Big 12 Conference standings.

[2] The Cowboys reached the 2015 Big 12 Conference baseball tournament championship game, where they fell to Texas.

[3] Oklahoma State received an at-large bid to the 2015 NCAA Division I baseball tournament and was selected as one of the sixteen Regional hosts.