Organizers
- Windsor Tennis Association
- Windswept Dunes Golf Club
- Windwood Park
- Windy City Fieldhouse
- Windy City Hockey
- Windy City Storm
- Windy Hill Sports Complex
- Windyke Country Club
- Wine Country Half Series
- Wine Country Ride to Provide
- Wine Country Runs
- Wi-Ne-Ma Christian Camp
- Winer Events
- Winfield City High School
- Winfield Recreation Commission
- Winfield Warriors Wrestling
- Winfield Wolves
- Wing Tsun Illinois / Guerman's Martial Arts
- Wings for Life
- Wings for Life World Run
- Wings Gymnastics Society - CAD
- Wings of Hope
- Wingspan Arts
- Winks Volleyball Camp
- Winnebago Association of Kiteboarders
- Winneconne Youth Diamond Club
- Winners Edge Sports
- Winnetka Community House
- Winning Touch
- Winona Fire Local 575
- Winona Gospel Church
- Winona ORC
- WinShape Marriage
- Winslow Cancer Support Group
- Winston-Salem Tiny Vikings
- Winter Garden Police Athletic League
- Winter Garden Wheel Works
- Winter Haven Christian School
- Winter Haven Hospital Foundation
- Winter Haven Police Department
- Winter Park & Fraser Chamber
- Winter Park Surf Camp
- Winter Quest
- Winter Wonderland Workshop
- Winterberry Farm
- Winterfest 5K Challenge
- Winterset Dog Park 5K
- Winterset Soccer Club
- Winterville Parks and Recreation Department
- Winthrop Little League
