Organizers
- D&T Tennis Inc
- Da Vinci Science Center
- DAAC Community
- DADS Club Swim Team
- Daland Swim Team
- Dalcroze School of Music and Movement, LTD
- Dallas Mavericks
- Dallas Sniper Training LLC
- Dallas Theater and Civic Center
- Dan Bulley Soccer School
- Dana Barros Basketball Club
- Dancers Studio, Inc.
- Dancin' Around Dance Studio
- Danu Folk School
- Danville/Peacham Little League
- Darlington Arts Center
- Dave Giffard Soccer Camp
- Davis Island Youth Sailing Foundation
- Dawson BBQ 5K
- Dawson Creek Seals
- DAYS Piranhas
- DeArmon Creative Arts School & Theater
- DEBATE CAMP - CAN
- Deep River Candu
- Defence First Inc
- Defensive Lucidity LLC
- DeKalb County Recreation, Parks & Cultural Affairs
- DeKalb County Recreation, Parks & Cultural Affairs
- Delanco Camp Meeting Association
- Delaney Hockey
- Delaware State University Department of Wellness & Recreation
- Delaware Tactical Firearms
- Dell Rapids Baseball
- Dell Rapids Youth Softball
- Delmarva Christian Service Camp
- Delta Arts Alliance
- Delta Velo
- Denton Breakfast Kiwanis
- Desert Recreation District
- Desoto Fire Training Center
- DeSoto Girls Softball Association
- Destiny Sports Mission
- Destiny Youth Ranch
- Detroit Lakes Community and Cultural Center
- Detroit Symphony Orchestra
- Devil's Thumb Ranch
- Devine Nutrition Inc.
- Diabetes UK
- Diamond Showcase Camps
- Diamondawgs
