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.| Team | W | L | Pct. | GB | Seed |
| 23 | 7 | .767 | – | 1 | |
| 21 | 9 | .700 | 2 | 2 | |
| 17 | 13 | .567 | 6 | 3 | |
| 15 | 15 | .500 | 8 | 4 | |
| 10 | 20 | .333 | 13 | 5 | |
| 4 | 26 | .133 | 19 | 6 |