2005 Mountain West Conference baseball tournament

The 2005 Mountain West Conference baseball tournament took place from May 23 through 27. All six of the league's teams met in the double-elimination tournament held at University of Utah's Franklin Covey Field. Top seeded UNLV won their third straight and third overall Mountain West Conference Baseball Championship with a championship game score of 7–4 and earned the conference's automatic bid to the 2005 NCAA Division I baseball tournament.

Seeding
The teams were seeded based on regular season conference winning percentage only.

Most Valuable Player
Matt Wagner, a pitcher for the champion UNLV Rebels, was named the tournament Most Valuable Player.