2004 Mountain West Conference baseball tournament
The 2004 Mountain West Conference baseball tournament took place from May 26 through 29. All six of the league's teams met in the double-elimination tournament held at University of Nevada, Las Vegas's Earl Wilson Stadium. Third seeded UNLV won their second straight and second overall Mountain West Conference Baseball Championship with a championship game score of 6–3 and earned the conference's automatic bid to the 2004 NCAA Division I baseball tournament.
Seeding
The teams were seeded based on regular season conference winning percentage only. New Mexico claimed the second seed by winning the season series against UNLV.| Team | W | L | Pct. | GB | Seed |
| 19 | 9 | .679 | – | 1 | |
| 20 | 10 | .667 | – | 2 | |
| 20 | 10 | .667 | – | 3 | |
| 18 | 12 | .600 | 2 | 4 | |
| 11 | 19 | .367 | 9 | 5 | |
| 0 | 28 | .000 | 19 | 6 |
All-Tournament Team
The following players were named to the All-Tournament team.| Name | Class | Team |
| Clayton Couch | So. | Air Force |
| Josh Mader | Jr. | New Mexico |
| Rielly Embrey | Sr. | San Diego State |
| Scott Shoemaker | Sr. | San Diego State |
| Brick Ungricht | Fr. | San Diego State |
| Andrew D’Angelo | Sr. | UNLV |
| Eric Nielsen | Jr. | UNLV |
| Zeke Parraz | Jr. | UNLV |
| Ryan Ruiz | Sr. | UNLV |
| David Seccombe | Sr. | UNLV |