Organizers
- Wahoo Parks and Recreation Department
- Waikiki Swim Club
- Wake County Parks, Recreation and Open Space
- Wakeland High School - Wolverine Club
- Waldorf School of New Orleans
- Waldorf School of Philadelphia
- Waltham Recreation Department
- Warren Sports and Fitness
- Warrington Warwick Boys Basketball
- Washington Business Week
- Washington County Adult & Community Education
- Washington Parks and Recreation
- Waskasoo Environmental Education Society
- Waterford Craft School
- Waterford School District
- Waterloo Youth Sports Organization
- Watertown DASH
- Wauconda Park District
- Waves Programs
- Wayne Art Center
- Wayne Christian School
- Wayne County Challenge
- We Are Adventurers Ltd
- We Care Online
- Weatherford ISD
- Weathervane Playhouse, Akron
- Weehawken Creative Arts
- Wellington Recreation Commission
- Wells Branch Municipal Utility District
- West Atlanta Watershed Alliance
- West Chester Women's Multisport, LLC
- West End Youth Organization
- West Fargo Park District
- West Hillhurst Community Association
- West Marin Community Services
- West Shore Recreation Commission
- Western Colorado University - JMC
- Western Youth League
- Westgate Community School
- Westminster Community Services and Recreation
- Westmoreland Hockey Association (Westmoreland Eagles)
- Wexford Triathlon Club
- Wheel Kids Bicycle Club, Inc.
- Wheelhouse Studios
- Whistler Mountain Ski Club
- Whistler Sea Wolves Swim Club
- White Pine Programs
- White Rock Amateur Swim Club
- Whitmore Lake Community Recreation
- WHL - CAN
