1988–89 Southwest Indoor Soccer League season

The 1988–89 Southwest Indoor Soccer League season was an American indoor soccer season run by the Southwest Indoor Soccer League.

Semifinals

 * The Lubbock Lazers defeated the Addison Arrows: 4-6, 8-6, 10-8, 4-10, 8-5
 * The Austin Sockadillos defeated the Houston Express: 7-6(OT), 11-7, 12-9

Honors

 * Most Valuable Player: Brian Monaghan, Austin Sockadillos
 * Top Scorer: Brian Monaghan, Austin Socadillos (71 goals)
 * Assist Leader: Uwe Balzis, Austin Sockadillos (28 assists)
 * Top Goalkeeper: David Swissler, Lubbock Lazers
 * Rookie of the Year: Todd Hoodenpyle, Lubbock Lazers
 * Coach of the Year: António Simões, Austin Sockadillos