Organizers
- Warrior's Society
- Warsaw Chamber of Commerce
- Wartburg College
- Warwick Humane Society
- Warwick Lions Club
- Warwick Little League
- Wasatch Freestyle Foundation
- Wasatch Shredders
- WascoTravel Baseball
- Washington & Lee High School Cross Country
- Washington Area Humane Society
- Washington Area Softball Association
- Washington Basketball Camps
- Washington Business Week
- Washington County FC
- Washington County School District
- Washington Early Childhood Center
- Washington Open Parent Faculty Group Drama Program
- Washington Park Tennis Little League
- Washington Parks and Recreation
- Washington Sea Grant
- Washington Township Parks and Recreation
- Washington University in St. Louis Triathlon Club
- Washington Utah Little League
- Washoe Golf Course
- Washougal Schools Foundation
- Wasilla Noon Rotary
- Waskasoo Environmental Education Society
- Water Cities Soccer Club
- Water Ski Camp
- Water Street Studios
- Water World Swim, LLC
- WaterAid
- Waterbury Youth Football and Cheerleading
- Waterford Area Chamber of Commerce
- Waterford Fall Foliage Road Race Committee
- Waterford High School
- Waterford Open Waterford
- Waterford School District
- Waterford Swim Team
- Waterfront Academy
- Waterloo Soccer Club
- Waterloo Youth Sports Organization
- Waterman's Community Center
- Waterpark Ventures LLC
- Water's Edge
- Watershed Adventures Summer Camps
- Watertown Boys and Girls Club
- Watertown DASH
- Watertown Park, Recreation and Forestry
