1991 Southwest Conference baseball tournament
The 1991 Southwest Conference baseball tournament was the league's annual postseason tournament used to determine the Southwest Conference's automatic bid to the 1991 NCAA Division I baseball tournament. The tournament was held from May 16 through 18 at Olsen Field on the campus of Texas A&M University in College Station, Texas.
The number 1 seed went 3–0 to win the team's 10th SWC tournament under head coach Cliff Gustafson.
Format and seeding
The tournament featured the top four finishers of the SWC's 8 teams in a double-elimination tournament.| Place | Team | Conference | Conference | Conference | Conference | Overall | Overall | Overall | Seed |
| Place | Team | W | L | % | GB | W | L | % | Seed |
| 1 | 14 | 7 | - | 48 | 18 | 1 | |||
| 2 | 13 | 8 | 1 | 44 | 23 | 2 | |||
| 3 | 12 | 9 | 2 | 40 | 20 | 3 | |||
| 4 | 10 | 11 | 4 | 34 | 25 | 4 | |||
| 5 | 10 | 11 | 4 | 40 | 22 | - | |||
| 6 | 10 | 11 | 4 | 37 | 19 | - | |||
| 7 | 9 | 12 | 5 | 42 | 18 | - | |||
| 8 | 6 | 15 | 8 | 16 | 34 | - |