American Association of Equine Practitioners - a nonprofit professional organization of equine veterinarians.

American Hanoverian Society - a non-profit corporation dedicated to breeding and promoting Hanoverian Horses in the United States.

American Horse Council - national trade association of the equine industry.

American Horse Shows Association - the national equestrian federation of the United States, which serves as regulatory body for the Olympic and World Championship equestrian sports.

American Morgan Horse Association - exists to preserve, promote, and perpetuate the Morgan horse.

American Paint Horse Association

American Quarter Horse Association - the official record keeping and governing body of the American Quarter Horse industry.

American Saddlebred Horse Association

Appaloosa Horse Club, Inc.

Arabian Horse Registry of America, Inc. - purpose and responsibility to preserve the integrity of the blood of the purebred Arabian horse.

Blood-Horse Magazine

Breeds of Horses - provides a list and background information on breeds of horses.

Horse Protection Act - prohibits horses subjected to a process called soring from participating in exhibitions, sales, shows or auctions.

International Arabian Horse Association - headquarters for active Arabian, Half-Arabian and Anglo-Arabian horse owners.

North American Equine Ranching Information Council - a nonprofit association representing horse breeders and ranchers in North America engaged in the collection of pregnant mares' urine.

Thoroughbred Owners and Breeders Association - the most influential association in North American dedicated solely to promoting the interest of Thoroughbred owners and breeders and Thoroughbred racing in general.

United States Trotting Association - created in 1939 to govern the sport of harness racing for the entire United States and the Atlantic Provinces of Canada.