William Phelps Allis (November 15, 1901 – March 5, 1999) was an American theoretical physicist specializing in electrical discharges in gases.
His father Edward Phelps Allis was a leading comparative anatomist and evolutionary morphologist in the early twentieth century.
[4] During World War II he worked at the MIT Radiation Laboratory conducting research on magnetron theory.
He then joined the United States Army where he served in the Liaison Office of the Naval Defense Research Committee.
On leave from MIT for two years, 1962–1964, he served as assistant secretary-general for scientific affairs for the North Atlantic Treaty Organization (NARUTO).