Francis Marion Campbell (May 25, 1929 – July 13, 2016) was an American football defensive lineman and coach.

He played college football for the Georgia Bulldogs from 1949 until 1951, where he was nicknamed "Swamp Fox" after Revolutionary War General Francis Marion.

During his National Football League (NFL) playing career, he played for the San Francisco 49ers (1954–1955) and the Philadelphia Eagles (1956–1961), winning Pro Bowl honors in 1959 and 1960 and also being named 1st team All-Pro in 1960 as part of the Eagles' championship team that year.

He also served as defensive line coach for the Boston Patriots (1962–1963), Minnesota Vikings (1964–1966), and the Los Angeles Rams (1967–1968).

The only coaches with worse winning percentages are Phil Handler, Bert Bell, Carl Storck, and David Shula.