Organizers
- Daytona Beach Music Academy
- DC Athletics
- DC Bilingual Public Charter School
- DC Multisport
- DC Running Club
- DC Timing
- D'Camp Entertainment
- DCB Logrollers
- DCC Justice Club
- DCipher Group Foundation
- DCMO BOCES
- DDJ Event productions
- De La Salle
- Deaddrop fitness limited
- DeadRunning
- Deaf & Hard of Hearing Service Center
- Deaf Youth Today
- Deans Marsh Community Cottage
- Dearborn Racquet & Health Club
- DeArmon Creative Arts School & Theater
- Death Race Relay, LLC
- DeBary Golf and Country Club
- DEBATE CAMP
- DEBATE CAMP - CAN
- DEBATE CAMP - US
- Debate Camp Canada
- DEBATE CAMP CANADA - CANADIAN EDITION
- DEBATE CAMP CANADA - US EDITION
- DEBATE CAMP-US
- DebateAble
- Debbie Allen Dance Academy
- Debbie Green 5k run and walk for leukemia
- DeBell Golf Club
- Deborah Hughes
- Deborah Montgomery Racing
- Debra Spain Golf
- Debra Stefan Fitness
- Decatur Alzheimer's Committee
- Decatur Athletic Club
- Decatur Bicycle Club
- Decatur Bulldog Boosters
- Decatur Park District
- Decatur Township Aquatic Club
- Decatur Township Girls Softball
- Decorah United Soccer Club
- Dedham PW
- Dee Boland
- Deep Creek Adventure Racing
- Deep Creek Lake Lions Club
- Deep River Candu