1998-99 South Interlake Hockey League season

This is the 1998-99 South Interlake Hockey League season.

Playoffs

 * Quarter Finals

Warren defeated Riverton 3-games-to-none Stonewall defeated Teulon 3-games-to-none Lac du Bonnet defeated Lundar 3-games-to-2 Fisher Branch defeated Arborg
 * Semi Finals

Fisher Branch defeated Warren Stonewall defeated Lac du Bonnet 3-games-to-2
 * Final

Stonewall defeated Fisher Branch 3-games-to-1