Sir Gaylord (February 12, 1959 – May 10, 1981) was an American Thoroughbred racehorse who later became a successful sire.
Sir Gaylord was sired by the British-bred, American-raced Turn-To out of the mare Somethingroyal and was therefore the half-brother of Secretariat.
One of the leading two-year-old colts of 1961, Sir Gaylord was the favorite going into the 1962 Kentucky Derby.
Shortly before the Derby, on May 4, he suffered a hairline fracture of the sesamoid bone in his right foreleg during a workout which ended his racing career.
He stood at stud in the United States until 1972, when he was sent to Haras du Quesnay (France).