Organizers
- CGI Racing
- CGL Consulting, LLC
- CGL GT Camp
- CGL Investments Pty Ltd
- Chabot College Track & Field
- Chabot Space and Science Center
- Chabot-Las Positas Community College District
- Chagrin Falls Boosters
- Chagrin Falls Community Education
- Chain Buster Productions
- Chain Events
- Chaires Eagles
- Challenge & Champions
- Challenge Fitness
- Challenge Fitness Tennis
- Challenge Nation
- Challenge North America, LLC
- Challenge Taiwan
- Challenger Center
- Challenger Learning Center
- Challenger Learning Center of Alaska
- Challenger Production and Ramm Sports LLC
- Challenger Productions and Ramm Sports LLC
- Challenger Sports
- Chamber of Commerce
- Chamber of Commerce of Eastern CT
- Chamber of Commerce of Greater Cape May
- Chambers Bay Golf Course
- Chambersburg Memorial YMCA
- Chambersburg YMCA
- Chamblee Middle School Education Foundation
- Champ Camp
- Champ Camp LLC
- Champagne Runch
- Champaign County Farm Bureau Foundation
- Champaign Park District
- Champion Summer Camp
- Champion Volleyball
- Championchip Ireland
- Champions Club Basketball
- Champions Club Sports
- Champions Events
- Champions Fitness Club
- Champions Hockey Academy Inc.
- Champions of Wickenburg Youth
- Champions Pointe Golf Club
- Champions Soccer Camp
- Championship Fastpitch
- Championship Racing.com
- Champlain Islands Parent Child Center
