| Name | Labels | City | State / Province |
|---|
| Contact Agility Club | clubfacilitytraining | Pleasant Valley | NY |
| Contact Point Agility - Karen Moureaux - Canoga Park | clubfacilityrentaltraining | Canoga Park | CA |
| Contact Point Agility - Karen Moureaux - Fillmore | facilitytraining | Fillmore | CA |
| Contact Sports Agility - Diane Sanders | clubtraining | Huntley | IL |
| Contact Zonies | club | Phoenix | AZ |
| Contactacoat | equipment | Bonney Lake | WA |
| Control Unleashed - Leslie McDevitt | general | | |
| Conversational Agility by Stuart Mah | general | | |
| Cool Critters Dog Training | clubfacilitytraining | Valrico | FL |
| Cool School for Dogs | training | | |
| Corral Creek Dog Sport Center | facilityrentalstoretraining | Newberg | OR |
| Countryside Agility | equipmentfacilityrentalservicestoretraining | Edinboro | PA |
| Courteous Canine, Inc. | facilitygeneralrentaltraining | Lutz | FL |
| Cowtown Dog Sports | facilitytraining | Hudson Oaks | TX |
| Cream City Canines | club | Milwaukee | WI |
| Creative Paws, Inc. - Ashlee Trotter | training | Chicago Ridge | IL |
| Creekside Canines | training | Kernersville | NC |
| Criterion Agility - Marlborough | facilitytraining | Marlborough | CT |
| Criterion Agility - Middlefield | facilitytraining | Middlefield | CT |
| Crocus Obedience & Kennel Club | clubfacilitytraining | Cornwallis | MB |
| Crossbones Dog Agility | blogstoretraining | Smithfield | RI |
| Cudahy Kennel Club | clubfacilityrentaltraining | Saint Francis | WI |
| CurrieandAshley | blogvideo | | |
| Cyber Agility - Helix Fairweather | servicetraining | Albany | OR |
| Cynthia Hornor Dog Agility | onlinetraining | Clarksville | MD |