Organizers
- Weston Racquet Club
- Westover Hills Assembly of God
- Westport Island Shore Run Association
- Westport Leisure park
- Westport Young Woman's League
- Westshore Basketball
- Westside Cooperative Preschool
- Westside Elementary School PTO
- Westside United Soccer Club
- Westside Vikings Youth Football & Cheer
- Westville Athletic Boosters
- Westward Look Resort
- Westwood Cross Country Camp
- Westwood Hills Elementary School - PTO
- Westwood Tennis Center
- Wexford Triathlon Club
- Weymouth Food Pantry
- Weymouth Youth Track Club
- WF Elite Volleyball Academy
- WGCEDEP
- WGSA
- WGWL Trail
- Whale Camp
- Wharton Institute for the Performing Arts
- What Do You Run For? Event Management
- Whatcom County Park and Recreation
- Whatcom Events
- Wheatland Technical Institute
- Wheaton College Athletics
- Wheaton Park District
- Wheaton Park District Youth Baseball
- Wheaton Sport Center
- Wheaton Wildcats Travel Softball
- Wheaton Yamaha Music School
- Wheel & Sprocket
- Wheel Kids Bicycle Club
- Wheel Kids Bicycle Club, Inc.
- Wheeler Summer Camps
- Wheelhouse Studios
- Wheelhouse Studios (formerly WI Union Mini Courses)
- Wheelhouse Workshop
- Wheeling Wheelmen
- Wheels and Heels 5K Road Race
- Wheels in Wheels Events
- When Help Can't Wait
- When I Grow Up Nebraska
- When You Wish Upon A Star
- Whidbey Island Bicycle Club
- WhidbeyHealth Foundation
- Whipple Lacrosse
