John Harcourt Alexander Morgan (August 31, 1867 – August 25, 1950) was a Canadian-American entomologist, educator, and agricultural expert, who served as president of the University of Tennessee from 1919 until 1934. In 1933, he was appointed to the inaugural board of the Tennessee Valley Authority, with which he remained until 1948, including three years (1938–1941) as chairman. In both capacities, he promoted a philosophy known as "the common mooring," which stressed a harmonious relationship between man and the environment, and consistently worked to introduce more efficient and less destructive farming techniques in the Tennessee Valley.