Organizers
- DUGOUT CLUB
- Duke City Wheelmen
- Duke Ellington School
- Duke of Earl Run for Missions - 3rd Annual
- Duke School Camps
- Duke Soccer School for Girls
- Duke University Football Camps
- Duke University Golf Club
- Duke's Mainline Lacrosse Club
- Duke's OceanFest
- Dulins Sports Complex
- Duluth Harvest Run
- Duluth Parks and Recreation
- Dumb Ox Ministries
- Dumfries Amateur Swimming Club
- DumlerGolf at SentryWorld
- Dunbar Area Little League
- Duncan Mill Summer Camp
- Duncanville Boys Baseball, Inc.
- Duncanville ISD
- Dundalk Youth Services Center
- Dundee Cross Country
- Dundee Dragons
- Dundonald Community Association
- DUNE HALFMARATHON
- Dunedin Kiwanis Foundation Inc
- Dunedin Scottish Arts Foundation
- Dunhill, LLC. DBA Elite Prep Sports
- DuniaLari.com
- DunkFIT Kids
- Dunkirk Lakefront 5k
- Dunkirk Travel Baseball
- Dunlap High School
- Dunmore Festival
- Dunmore Little League
- Dunnellon Little League
- Dunwoody Baptist Church
- DuPage Children's Museum
- DuPage Training Academy
- DUPONT BASEBALL CLUB LLC
- DuPont Country Club
- Durango Nature Studies
- Durango Parks and Recreation
- Durga Tree International
- Durham Eagles Athletic Association
- Durham Middle School
- Durham Parks & Recreation
- Dutch 4vs4 Scouting
- Dutch Hollow CC
- Dutch Soccer Academy
