Harold Francis Smiddy (June 3, 1900 – 8 September 1978) was an American engineer, business manager, and management consultant, known as the 17th president of General Electric,[1] and recipient of the Henry Laurence Gantt Medal in 1957.

After attending Peters High School from 1912 to 1916, he obtained his BSc from the Massachusetts Institute of Technology in the 1920.

In 1943 he joined Booz, Allen & Hamilton, where he started as consulting engineer, and was general partner from 1943 to 1948.

From 1948 to 1951 he was general manager at GE's air conditioning department in Bloomfield, New York.

In 1957 the American Management Association and the ASME awarded Smiddy the annual Henry Laurence Gantt Medal.