Organizers
- Whole Earth Nature School
- Wichita Collegiate School
- Wicked Wine Run
- Wicked Workshop, LLC
- Wicomico County Department of Recreation Parks & Tourism
- Wiese Baseball Academy
- Wigan Warriors Community Foundation
- Wild Clay LLC
- Wild Earth
- Wildcat Wrestling Club
- Wilderness Christian Assembly
- Wilderness Trails, Inc.
- Wildheart Nature School
- WildWise
- Wildwood Park District
- Willamalane Park and Recreation District
- Willamette Valley Kitchen Co.
- Williamsburg Northside Preschool
- Williamson County Parks and Recreation
- Willows Preparatory School
- Windermere Preparatory School
- Winfield Recreation Commission
- Wings Gymnastics Society - CAD
- Winter Wonderland Workshop
- Winthrop Little League
- Wisconsin Conservatory of Music
- Withywindle Adventure School
- Wizardry Summer Day Camp
- Wize Computing Academy - Newark-Middletown
- Wize Computing Academy Mid-Peninsula
- Wize Computing Academy of Ann Arbor-Canton-Plymouth
- Wize Computing Academy of Ashburn Virginia
- Wize Computing Academy of Cary and Apex
- Wize Computing Academy of Central & Eastern Montgomery County
- Wize Computing Academy of Central Jersey
- Wize Computing Academy of Coastal San Diego
- Wize Computing Academy of Coral Springs & Parkland
- Wize Computing Academy of Cypress & Tomball
- Wize Computing Academy of East Plano, Irving & Highland Park
- Wize Computing Academy of East Valley
- Wize Computing Academy of Frisco & Plano
- Wize Computing Academy of Jacksonville East
- Wize Computing Academy of Little Elm & Richardson
- Wize Computing Academy of McLean–Tysons
- Wize Computing Academy of North Central New Jersey
- Wize Computing Academy of North Seattle-Shoreline
- Wize Computing Academy of Northeast DFW
- Wize Computing Academy of Northwest Arkansas
- Wize Computing Academy of NRH, Hurst & Bedford
- Wize Computing Academy of Parker & Cherry Creek
