Nijinsky (21 February 1967 – 15 April 1992), usually known in the United States as Nijinsky II, was a Canadian-bred, Irish-trained Thoroughbred racehorse and sire. He was the outstanding two-year-old in Europe in 1969 when he was unbeaten in five races. In the following season, he became the first horse for thirty-five years to win the English Triple Crown, a feat that had not been repeated as of 2020. He is regarded by many experts to have been the greatest flat racehorse in Europe during the 20th century.