E. G. Marshall was an American actor. One of the first group selected for the new Actors Studio, by 1948 Marshall had performed in major plays on Broadway.

12 Angry Men is a 1957 American independent legal drama film directed by Sidney Lumet, adapted from a 1954 teleplay of the same name by Reginald Rose. The film tells the story of a jury of 12 men as they deliberate the conviction or acquittal of a teenager charged with murder on the basis of reasonable doubt; disagreement and conflict among them force the jurors to question their morals and values. It stars Henry Fonda, Lee J. Cobb, Ed Begley, E. G. Marshall, and Jack Warden.