Organizers
- Cannonballs Cycling Team
- Canon Hayes Recreation Centre
- Canopy Oaks Rams
- Canterwood Golf and Country Club
- Canton Area Little League
- Canton Area Tennis Association
- Canton Club Scientific
- Canton Family YMCA
- Canton Leisure Services
- Canton Middle School PTO
- Canton Parks & Recreation
- Canyon ASB
- Canyon Basketball Association
- Canyon Creek Country Club
- Canyon Hills
- Canyon Hills Little League
- Canyon Lake Girls Softball
- Canyon Lake Hawks Youth Football
- Canyon Lake Little League
- Canyon View Little League
- Canyonlands Field Institute
- Canyonview Camp
- Cape Area Tennis Association
- Cape Canaveral Recreation Complex
- Cape Cod Academy Summer Camp
- Cape Cod Canal 10km
- Cape Cod Theatre Company - Home of the Harwich Junior Theatre
- Cape Cod Theatre Company / Harwich Junior Theatre
- Cape Coral High School Band
- Cape Coral Rotary Club
- Cape Coral Yacht Club
- Cape Elizabeth Community Services
- Cape Fear Regional Tennis Foundation
- Cape May County Park & Zoo
- Cape St. Claire Swim Team
- Capilano University Athletics and Recreation
- Capital Area Tennis Association
- Capital Baptist Church
- Capital Bicycle Racing Club
- Capital Community Church
- Capital East Soccer Club
- Capital Region Nordic Alliance, Inc.
- Capital Sprints
- Capitol Adventure
- Capitol Debate
- Capitol Hill Arts Workshop
- Capitol View Events
- Capoeira Live the Game
- Capon Valley 50K Run
- CAPPIELLO STUDIO
