Oliver Garfield Haywood, Jr., (29 November 1911 – 25 May 2002) was a United States Army officer during World War II who served with the Manhattan Project.

He entered the United States Military Academy at West Point on 1 July 1932, and graduated top of the class of 1936 on 12 June 1936.

Haywood was commissioned as a second lieutenant in the United States Army Corps of Engineers, and was posted to Vicksburg, Mississippi, as executive officer of the Waterways Experiment Station.

[3] In October 1943, Haywood was assigned to the G-1 (Personnel) Division of the War Department General Staff in Washington, D.C. For his services in this role, he was promoted to colonel on 28 September 1944, and was awarded the Legion of Merit.

[5] Groves hoped that a new, permanent agency would soon be created to take over the responsibilities of the wartime Manhattan Project, but passage of the Atomic Energy Act of 1946 through Congress took much longer than expected, and involved considerable debate about the proper role of the military with respect to the development, production and control of nuclear weapons.

His Army of the United States rank was terminated on 30 June 1947, and he returned to duty with the War Department General Staff as a captain on 1 July 1947.

[3] Haywood was seconded to the Los Alamos National Laboratory in New Mexico from February 1950 to October 1951, at a time when the first thermonuclear weapons were being developed.

"[8] Haywood then served at the chief of the Air Force Office of Scientific Research,[5] and was vice commander of the Atlantic Missile Range until his retirement from active duty in 1953.

[9] After leaving the Air Force, Haywood became the President and chief executive officer, and later the chairman of the board of Huyck Corporation in Stamford, Connecticut.