Organizers
- Sienna Ranch
- Sierra Club Canada Foundation
- SILVER CREEK ACADEMY
- Silver Maple Camp, Inc.
- Silver Run Ski Foundation
- Silverdale Baptist Academy
- Simmons Center
- Sinjin Beach Club
- Sinjin Beach Club (Boys)
- Sinjin Beach Club South
- Skate Bird Miami
- Skate Like a Girl
- SkateBird Miami
- Skatepark of Tampa
- Skating Club of Jackson Hole
- Skills Academy Ltd
- Skudin Surf @ American Dream
- Skudin Surf Inc
- Skudin Swim
- Slice of Heaven Educational Farm
- Slinger Parks, Recreation and Forestry
- SMart ART Club!
- Smithtown Aquatics
- Smithtown Recreation Department
- Smoky Valley Athletic Foundation
- Snapping Tortuga, LLC
- Soccer 360
- Soccer Academy
- Soccer Camps International
- Soccer Player Development
- Soccer Sprouts LLC
- Socceropolis, LLC
- SocRoc - Soccer Classes For Kids
- Sofos
- Sokol Spirit
- Solera/Sun City at Apple Valley
- Somerset Hills State Schl. ASC
- Sopris Barracudas
- SoundWaters
- SourcePoint
- South Ayrshire Swim Team (SAST)
- South Coast Chinese Cultural Association
- South Davis Recreation Center
- South Essex Community Council
- South Metro Human Services
- South Milwaukee Recreation Department
- Southampton Little League
- Southeast Texas Hoops
- Southern Food & Beverage Museum Children's Programs
- Southern Technical Institute
