1989 Southwest Conference baseball tournament

The 1989 Southwest Conference baseball tournament was the league's annual postseason tournament used to determine the Southwest Conference's (SWC) automatic bid to the 1989 NCAA Division I baseball tournament. The tournament was held from May 18 through 20 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 second SWC tournament under head coach Mark Johnson.

Format and seeding
The tournament featured the top four finishers of the SWC's 8 teams in a double-elimination tournament.

Texas A&M won the tiebreaker over Arkansas based on a 2–1 head to head record.