Stuart William Seeley (June 23, 1901 – November 4, 1978) was a noted American electrical engineer, best known for inventing the Foster–Seeley discriminator and SHORAN.
From 1915 to 1924 he was an amateur radio experimenter and commercial operator, then worked at General Electric 1925–1926, Sparks Withington 1926–1935, and the RCA License Laboratory, starting in 1935.
In 1938, while attempting to remove "ghost" signals from an experimental television system, Seeley realized that he could measure distances by time differences in radio reception.
In summer 1940, Seeley proposed building SHORAN, a bombing navigation system for the United States Army Air Forces.
Seeley received the 1948 IEEE Morris N. Liebmann Memorial Award "for his development of ingenious circuits related to frequency modulation", and the 1960 Magellanic Premium from the American Philosophical Society for Shoran.