Organizers
- Sprinker Tennis Center
- Sprocket Science LLC
- Sprouting Sports
- Spruce Lake Day Camp
- Spruce Meadow Farm
- Spud Run 5k/1 mile run
- Spurling Training Systems
- Squad Harmonix
- Squamish Pirates
- Squaw Creek/Army Challenge
- Squirrel Run Golf Club
- Sri Chinmoy Marathon Team
- Sri Chinmoy Marathon Team NY
- SRK Racing
- SRU Campus Recreation
- SSC Enterprises
- SSCD Home and School
- SSG Scott Burgess Scholarship
- SSM Physical Therapy
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- SSV Tennis
- St Albans Half Marathon
- St Andrews UMC Summer Camp
- St Augustine Tennis @Treaty Park
- St Barnabas House
- St Bernard Chamber of Commerce
- St Brigids Gaels LGFA
- St Brons Marathon
- St Catherine of Siena School
- St Catherine's Hospice
- St Charles Boys Baseball
- St Clair Shores Figure Skating Club
- St Croix 50
- St David's Hospice
- St Elizabeth Cancer Center
- St Frances Animal Center
- St Francis
- St Francis of Assisi Catholic Church
- St James the Greater Athletic Association
- St John Ambulance
- St John LaLande School
- St John Prep High School
- St Johns Racquet Center home of Portland After School Tennis and Education
- St Joseph Regional Catholic School
- St Joseph School Dallastown
- St Joseph's Academy
- St Kitts & Nevis Swimming Federation
- St Leonard Turkey Trot
- St Lukes Hospice
- St Luke's Weight Management Center
