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The Tennessee Walking Horse or Tennessee Walker is a breed of gaited horse known for its unique four-beat "running walk" and flashy movement. It was originally developed in the southern United States for use on farms and plantations. It is a popular riding horse due to its calm disposition, smooth gaits and sure-footedness. The Tennessee Walking Horse is often seen in the show ring, but also popular as a pleasure and trail riding horse using both English and Western equipment. 

The breed first developed in the late 18th century when Narragansett Pacers and Canadian Pacers from the eastern United States crossed with gaited Spanish Mustangs from Texas. Other breeds were later added, and in 1886 a foal named Black Allen, now considered the foundation sire of the breed, was born. In 1935 the Tennessee Walking Horse Breeders' Association was formed, and the studbook closed in 1947. In 1939, the first Tennessee Walking Horse National Celebration was held, an annual event that in recent years has attracted considerable attention and controversy.

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