Organizers
- Chi Running - Tri Tek Camps
- CHI St. Alexius Health Dickinson Foundation
- Chicago Area Runners Association (CARA)
- Chicago Bandits
- Chicago Center for Music Education
- Chicago Children's Choir
- Chicago Childrens Clinic
- Chicago Corner Church
- Chicago Executive Airport
- Chicago Futsal Academy
- Chicago Lakefront Soccer Club
- Chicago Multi-Cultural Dance Center
- Chicago Park District
- Chicago Players Club
- Chicago Running and Special Events Management, Inc
- Chicago Running and Special Events Mgmt
- Chicago School of Musical Arts
- Chicago Sport and Social Club
- Chicago White Sox
- Chicago Winter Bike Swap
- Chicago Yacht Academy
- Chicagoland Chapter of the Hutchinson Bell
- Chicagoland FCBC
- ChicagoSMA|Enrichments
- Chickasaw Country Club
- Chicks Love Dancing LLC
- Chico Area Recreation and Park District
- Chico Creek Nature Center
- Chico Softball Little Leage
- Chico State Athletics
- Chicopee Chargers Youth Sports Parent Organization
- Chicopee Woods Golf Course
- Chicopee Youth Football Association
- Child Advocacy Center
- Child Advocacy Center of Northern New York
- Children & Youth Ministry of Mt Harmony Lower Marlboro
- Children First Alliance of Alabama, Inc
- Children of the Caribbean
- Children With Hope
- Children's Art Place
- Children's Arts Theatre School
- Children's Arts Umbrella Association
- Children's Chorus of Maryland
- Children's Clinic, LLC
- Children's Community School
- Children's Fairyland
- Children's Grief Connection
- Children's Home of Jefferson County
- Children's Home Society
- Children's Hospice of America Foundation
