Stanley Kuhl Hornbeck (May 4, 1883 – December 10, 1966) was an American professor and diplomat.
A Rhodes scholar and the author of eight books, he had a distinguished thirty-year career in government service.
He was chief of the State Department Division of Far Eastern Affairs (1928–1937), a special adviser to Secretary of State Cordell Hull (1937–1944), and ambassador to the Netherlands (1944–1947).