Organizers
- Singapore Cycling Federation
- Singapore Dragon Boat Association
- Singapore Fitness Model Search
- Singed, LLC
- Singing Starlets
- Singleton Tennis
- Sinness Education Foundation DBA Innovation Education
- Sino Language & Beyond
- Sioux Falls Jazz and Blues Society
- Sioux Falls Tennis Association
- Sip-n-Doodle
- Sisk Elementary School
- Siskiyou Pop Warner
- Sissonville Volunteer Fire Department
- Sister Arts Studio, Inc.
- Sister City Association of Garden Grove
- Sisters Tri-ing
- Sisu Athletic Development
- SIUE Soccer Camps Presented by Pass and Move Soccer, LLC
- Six Flags Discovery Kingdom
- SixBySix Performance
- Sixth Annual Folsom Powerhouse Century
- Sizzlin Summer Series
- SJCNY Brooklyn Athletic Programs
- Skagit Bicycle Club
- Skagit Valley Young Life
- SKAM School of Performing Arts
- Skan Lions Resolution Run
- Skaneateles Polar Bear Club
- Skate Bird Miami
- Skate Like a Girl
- Skate Like a Girl - Donations
- Skate Marathon
- SkateBird Miami
- SkateIDSA
- Skatepark of Tampa
- Skating Club of Jackson Hole
- Ski Masters Ski & Snowboard School
- Skibbereen Lions Club
- Skiin' with the Galilean
- Skills Academy Ltd
- Skills Ville
- Skim Tybee
- Skipjack Run
- Skudin Stand Up Paddle
- Skudin Surf @ American Dream
- Skudin Surf Events
- Skudin Surf Inc
- Skudin Surf Inc - Puerto Rico
- Skudin Swim
