Organizers
- Crossings Christian School
- Crossover Athletics
- Crossover Elite
- Crossover Sports Inc
- Crossover Spykers Volleyball
- Crosspointe Cruisers Swim & Dive Team
- Crosspointe Lutheran Church
- Crossroads Christian Camp
- Crossroads Community Church
- Crossroads of Pella
- CrossView Community Church
- Croswell-Lexington Little League
- Croton Sailing School
- Crowfield Little League
- Crowley Town Club 5KolorRun
- Crown City Little League
- Crown Colony Country Club
- Crown Point Bulldog Hockey Club
- CRRC Recreation Center
- CRS Gymnastics
- Cru - Urban Sumit Adventures
- Crucible Racing LLC
- CRUK Louth
- CRUSA
- Crush Basketball Club
- Crush Rush
- Crushers Softball
- Cryo Depot
- Crystal Cove State Park
- Crystal Cove State Park Junior Lifeguards
- Crystal Crime Prevention Board
- Crystal Ice House
- Crystal Lake Sailing School
- Crystal Mountain INC
- Crystal Mountain Resort
- Crystal Springs Golf Course
- CS Blue Devils
- CS East Coast Championships and/or Kokushikai Judo Camp
- CSA
- CSC Soccer School of Excellence Camp
- Csc-Fon
- CSCRB, Inc.
- CSHP (California Society of Health-System Pharmacists)
- CSM Active
- CSP Dance Studios
- CS-Square Summer Camps
- CSU Professional Veterinary Medicine Program
- CSU, Chico Rec Sports Summer Camp
- CSUB
- CSUB Men's Basketball
