Stephen Thurston Hayt (June 5, 1822 in Ithaca, Tompkins County, New York – August 31, 1907 in Corning, Steuben County, New York) was an American politician from New York.
On November 19, 1856, he married Margaret C. Townsend at Palmyra, New York.
Their son was Stephen Thurston Hayt, Jr.
He was defeated for re-election at the New York state election, 1869 by Democrat William W. Wright.
He was buried at the Mount Hope Cemetery in Corning, NY.