Organizers
- Capstone Gifted Services
- Captains Baseball Camp
- CARA
- CARA Adapted Physical Activity Centre
- Caramba Soccer Skills Camp LLC
- Carbon County Recreation
- Carbon Valley Half Marathon
- Carbondale Park District
- Cardboard Playhouse Theatre Company
- Cardinal 5K
- Cardinal Fencing Academy
- Cardinal Greenway, Inc.
- Cardinal O'Hara High School
- Cardinal Raquet Club
- Cardinal Soccer Camps, LLC.
- Cardinal Wrestling Camps
- CARE For A Cure
- Care Net Lehigh Valley
- Care Net Pregnancy Center of Central Texas
- Care to Learn
- Career Centers USA
- Career Training
- CareNet Pregnancy Medical Center
- Carer Support Wiltshire
- Caribbean Culinary Tours
- Caribbean Sounds Race, LLC
- Caring Creatives
- Caring for Cambodia
- Caring Unlimited
- Carl Rose Soccer Academy
- Carlingford Adventure Racing Club
- Carlingford Half Marathon
- Carlisle Parks and Recreation
- Carlisle Soccer Club
- Carlos Gonzalez Foundation
- Carlsbad Golf Center
- Carlsbad Pop Warner
- Carmel Clay Parks and Recreation
- Carmel Elementary
- Carmel Mountain Little League
- Carmel Racquet Club
- Carmel Valley Athletic Club
- Carmel Valley Athletic Club - Summer Camps
- Carnes Crossroads Community Association
- Caro Baseball Federation (CBF)
- Carol Hutchins, LLC
- Carol Stream Park District
- Carolina CrossFit
- Carolina Day School
- Carolina Golf Center
