Merry Legs (1911–1932) was a Tennessee Walking Horse mare who was given foundation registration for her influence as a broodmare. She was also a successful show horse.

Merry Legs was foaled in April 1911. She was a bay with sabino markings.^[1] She was sired by the foundation stallion Black Allan F-1, out of the American Saddlebred mare Nell Dement, registration number F-3, and bred by the early breeder Albert Dement.^[2] She was a large mare at maturity, standing 15.2 hands (62 inches, 157 cm) high and weighing 1,200 pounds (540 kg).^[3] Merry Legs was a successful show horse; as a three-year-old, she won the stake class at the Tennessee State Fair. She was also successful as a broodmare, giving birth to 13 foals, among them the well-known Bud Allen, Last Chance, Major Allen, and Merry Boy.^[4] For her influence on the breed, she was given the foundation number F-4 when the TWHBEA was formed in 1935.^[5] She died in 1932.^[6]