Ragstone (1970–1978) was a British Thoroughbred racehorse and sire. A specialist stayer, he was unplaced in his only run as a two-year-old but won all four of his races in 1973. When moved up in class as a four-year-old he won the Aston Park Stakes and the Henry II Stakes before taking Britain's premier long-distance race, the Ascot Gold Cup. After seven successive wins he was beaten in his next race and retired to stud. He showed some promise as a breeding stallion before dying at the age of eight.