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.
[2][3] The teams were seeded based on regular season conference winning percentage only.
Matt Wagner, a pitcher for the champion UNLV Rebels, was named the tournament Most Valuable Player.