The St. Tammany Swim League (STSL) is a summer swim league formed to promote the sport of competitive swimming within and around St. Tammany Parish, Louisiana. The main goals of the league are to provide young athletes with the opportunity to excel in the sport of swimming, and to promote fun and good sportsmanship through family interaction and friendly competition.

The league currently has seven teams based at neighborhood pools and athletic clubs in the vicinity of Slidell, LA. Member teams accept swimmers up through 18 years old.

The STSL and the member teams are managed by volunteers. The most effective way to assist the STSL in its mission is to work to make one of the local member teams the best it can be. Please consider volunteering your time to your team. The league is run by a board consisting of a league board and team member reps. Teams select volunteers to represent them on the board.