Firdaussi (1929 – after 1944) was a British Thoroughbred racehorse and sire. He showed very good form as a two-year-old in 1931 when he won three of his five races including the Dewhurst Stakes. In the following year his progress was interrupted by illness in spring but he won his last four races, taking the Gordon Stakes before recording his biggest win in the St Leger and then defeating top-class older horses in the Jockey Club Stakes. He ran consistently as a four-year-old in 1933 but won only one minor race. Apart from his victories, Firdaussi was placed in the Eclipse Stakes (twice), Greenham Stakes, Lingfield Derby Trial and Great Jubilee Handicap. After his retirement from racing Firdaussi stood as a breeding stallion in Britain, France and Ireland, but had limited success as a sire