Sun Chariot (foaled 1939 in Ireland, died 1963) was a Thoroughbred racehorse who achieved the English Fillies Triple Crown by winning the 1,000 Guineas, the Oaks and the St. Leger in 1942.
Sun Chariot was a filly of great talent but very difficult temperament.
Before she ever appeared on a racecourse, she displayed such a lack of promise that she was nearly returned to Ireland, where the stud then was.
However, in her first start as a three-year-old, she refused to make any effort and was beaten for what turned out to be the only time.
She won the 1,000 Guineas, Oaks (despite steering a most wayward course) and the St. Leger, in which she beat the Derby winner, Watling Street.