There are gaited horses all over the world.

Here are some of the breeds that are in North America:

American Gaited Pony
American Saddlebred
Banker Horses
Bashkir Horses
The Campolina
Canadian Pacers
Gaited Curlies
Florida Cracker Horse
Gaited Foundation Appaloosa
Gaited Morgan
Gaited Mules
Icelandic Horse
Kentucky Mountain Saddle Horse
Mangalarga Marchador
The McCurdy Plantation Horse
Missouri Fox Trotter
Montana Travler
Mountain Pleasure
North American Single-footer
Paso Fino
Peruvian Paso
Pryor Mountain Mustang
Racking Horse
Rocky Mountain
Saddlebred
Spotted Saddle
Standardbred
Tennessee Walking Horse
Tennuvian
Tiger Horse
Trottingbred
Virginia Single-footers
Walkaloosa