Secretariat (March 30, 1970 – October 4, 1989) was an American Thoroughbred racehorse, that in 1973 became the first U.S. Triple Crown champion in twenty-five years, setting new race records in two of the three events in the Series—the Kentucky Derby (1:592⁄5), and the Belmont Stakes (2:24)—records that still stand today.
Secretariat was sired by Bold Ruler out of Somethingroyal, by Princequillo. He was foaled at Meadow Farm in Caroline County, Virginia. Like his famous predecessor Man o' War, Secretariat was a large chestnut colt and was given the same nickname, "Big Red." Secretariat's Grand Sire Nasrullah is also the Great-Great Grand Sire of 1977 Triple Crown winner Seattle Slew.