Organizers
- DIGIVATIONS INNOVATION & LITERARY CAMPS & PRE-COLLEGIATE ACADEMIES
- Dingman Delaware Little League
- Dinwiddie County Parks and Recreation Department
- Diocese of Duluth
- Diocese of Superior
- Discovery Center Collective
- Discovery Center of the Southern Tier
- Discovery Wilderness School
- DISTRICT OF HOUSTON
- District of Lake Country
- Dive San Diego
- Diverse and Inclusive Collaborative Education, Inc.
- Divine CNA Training
- DLCCC The Detroit Lakes Sunfish
- DMR Adventures
- Dobson Road Races
- Dolphins Community Aquatics Association
- Dominique Moceanu Gymnastics Center & Camp
- Doral Academy of Northern Nevada
- Double Play Sports Community Center Inc.
- Double Road Race Federation
- DOVER AREA AQUATIC CLUB
- down2earth endurance race
- Downingtown Community Education Foundation
- Dragon's Den
- Dramatic Education, Inc.
- Dream Enrichment Classes
- Dreamcatcher Carribean
- Dreamcatcher Events
- Dreamcatcher West Coast
- DrillzNSkillz LLC.
- DSE Runners
- Du City Tri Runs, Inc.
- Dublin Dance Centre & Gymnastics
- Dublin Partners in Education
- Duluth Parks and Recreation
- Dumfries Amateur Swimming Club
- Dundee Dragons
- Dunedin Scottish Arts Foundation
- Dutch Soccer Tours
