Cantelo (foaled 1956) was a British Thoroughbred racehorse and broodmare. In a career which lasted from spring 1958 until September 1959 she ran eleven times and won eight races. Cantelo was unbeaten in five races as a two-year-old including the Royal Lodge Stakes, in which she defeated colts. As a three-year-old in 1959 she won the Classic St Leger, as well as the Cheshire Oaks and the Ribblesdale Stakes. Her defeats came when finishing second in the Epsom Oaks (to Petite Etoile) and the Park Hill Stakes and running fourth to Alcide in the King George VI and Queen Elizabeth Stakes. She was retired from racing after her St Leger win and had some success as a broodmare.