Organizers
- Calera Fire Rescue
- Calera High School PTO
- Calgary Aquabelles Artistic Swim Club
- Calgary Aquabelles Synchronized Swim Club
- Calgary Catholic School District
- Calgary Young People's Theatre
- Calhoun Community Education
- Calhoun County Chamber of Commerce
- Calhoun Cycling Club
- Calhoun Little League
- Calico Racing, LLC
- California Baptist University
- California Country Club
- California Fire Mechanics Academy Inc.
- California Girl Series by Noble Pursuit, Inc.
- California Girls Soccer Camps
- California Junior Lifeguard Programs
- California Soccer Camps
- California State Parks - Huntington State Beach Junior LIfeguards
- California State Parks - Point Lobos Dive
- California State Parks - San Clemente State Junior Lifeguards
- California State Parks - Silver Strand State Beach Junior Lifeguards
- California State University, Bakersfield
- California Storm North
- California Tennis Association
- California University of PA
- California University of Pennsylvania - Baseball
- California University of Pennsylvania - Cross Country
- California University of Pennsylvania - Football
- California University of Pennsylvania - MBB
- California University of Pennsylvania - Men's Golf
- California University of Pennsylvania - Men's Soccer
- California University of Pennsylvania - Softball
- California University of Pennsylvania - Swimming
- California University of Pennsylvania - Volleyball
- California USTSA
- California Waterfowl Association - Hunt Program
- california watermalon festival
- California Youth Shooting Sports Association
- Callanwolde Fine Arts Center
- Callippe Preserve
- Calli's Swim Trainer
- Caloosa Riders Bicycle Club
- Calumet Memorial Park District
- Calumet Park - Parks + Recreation Department
- Calvary Baptist Church
- Calvary Baptist Church Academy
- Calvary Christian Academy
- Calvary Summer Day Camp
- Calvary Temple Church
