Mary Elizabeth McHughes Ferrell (26 October 1922 – 20 February 2004) was an American historian and independent researcher who created a large database on the John F. Kennedy assassination.

Born in Memphis, Tennessee, she married Hubert Afton "Buck" Ferrell (1919–1998), in 1940 and had four children.

[3] Her assassination database was originally written on over 40,000 cards and included details of over 8,200 people involved in the case.

Ferrell also created a four-volume set of chronologies, covering all aspects of the assassination.

[8] Rex Bradford, a computer game designer (Star Wars: The Empire Strikes Back, Star Wars: Jedi Arena, Mean 18, Drac's Night Out, and British Open Championship Golf),[9] holds the offices of President, Treasurer, and Clerk and developed the Mary Ferrell Foundation website, and the History-Matters.com website.