Horton Guyford Stever (October 24, 1916 – April 9, 2010) was an American administrator, physicist, educator, and engineer.
Stever was raised in Corning, New York, principally by his maternal grandmother. He played football in high school. He graduated from Colgate University with an undergraduate degree in physics and then from California Institute of Technology in 1941 with a Ph.D. in physics. He joined the staff of the radiation lab at MIT. In 1942 he began serving the military as a civilian scientific liaison officer based in London, England until the end of World War II. After D-Day he was sent to France several times to study German technology.
He returned to MIT after the war, serving as associate dean of engineering there from 1956 to 1959 and then as a department head. In 1965 he became the fifth President of Carnegie Mellon University (and the first under that name, in 1967), a position he held until 1972. Stever House, a dorm on Carnegie Mellon's campus is named for him.
He also served as the director of the National Science Foundation from 1972 until 1976. Between 1973 and 1977 he was President Gerald Ford's Science Advisor.
He also served on the board of trustees of Science Service, now known as Society for Science & the Public, from 1982 to 2006.