Organizers
- The Buffalo Swim Club
- The Bulli Burn
- The Calverton School
- The Cambridge School of Culinary Arts
- The Cameron Fitzwater Memorial Scholarship
- The Cameron Fitzwater Memorial Scholarship Foundation
- The Cancer Challenge
- the carers association
- The Carter Community Building Association (CCBA)
- The Castle Preschool
- The Center
- The Center for Gifted
- The Center for Kosher Culinary Arts
- The Center for Performing Arts at Rhinebeck
- The Center for Pursuit- Accounting Department
- The Center for Women
- The Center of Anna Maria Island
- The Center School
- The Challenger Learning Center of Kentucky
- The Chapel School
- The Charity Run, LLC
- The Chiari Group
- The Chicago Academy of Music
- The Chicago Ballet
- The Chicago Weaving School
- The Children of the Earth Foundation
- The Children' Theatre of Cincinnati
- The Children's Aid Foundation of York Region
- The Children's Theatre of Cincinnati
- The Children's Tree Montessori School
- The Chip Hale Center
- The Christian Church of Mid-America (Disciples of Christ)
- The Church at War Hill
- The Circle School
- The Citizen Science Lab
- The City of Annapolis
- The City of Charleston Municipal Golf Course
- The City of Granger
- The City of Lincoln Golf Courses
- The Club at Bella Collina
- The Club at Cimarron
- The Club at Crazy Horse Ranch
- The Club at Del Webb at Lake Oconee
- The Club at Harpers Point
- The Club at Indian Creek
- The Club at Savannah Harbor
- The Club at Strawberry Creek
- The Club at the Township
- The Club at Township
- The Club of Riverdale
