- American Association of Equine Practitioners
- American Paint Horse Association
- American Quarter Horse Association
- American Veterinary Medical Association
- The California Thoroughbred Breeders Association
- Emerald Downs
- The Jockey Club
- Lifesavers Wild Horse Rescue
- Maryland Horse Breeders Association
- Masters of Foxhounds Association of America
- Minnesota Horse Council
- Mustang Heritage Foundation
- National Horsemen’s Benevolent Protective Association
- National Thoroughbred Racing Association
- Pinto Horse Association of America
- The Equine Network (formerly Primedia Equine Network)
- Professional Rodeo Stock Contractors
- Professional Rodeo Cowboys Association
- Rescue Advisory Committee
- AHC State Horse Council Committee
- Thoroughbred Owners and Breeders Association
- United States Dressage Federation
- United States Equestrian Federation
- United States Polo Association
- United States Trotting Association
