Henry Fonda as Clarence Earl Gideon

José Ferrer as Abe Fortas

John Houseman as Chief Justice / Offscreen Narrator

Fay Wray as Edna Curtis

Dean Jagger as 6th Supreme Court Justice

Sam Jaffe as 1st Supreme Court Justice

Nicholas Pryor as Jacob

William Prince as 5th Supreme Court Justice

Lane Smith as Fred Turner

Richard McKenzie as Judge Robert McCrary

Dolph Sweet as Charlie

Ford Rainey as 2nd Supreme Court Justice

David Sheiner as Abe Krash

J. Patrick McNamara as Harris

Les Lannom as Bobby Earle

Malcolm Groome as John Ely

Allan Rich as Tobias Simon

Richard Lineback as Lester Wade

David Clennon as James Fitzpatrick

Michael Cavanaugh as Stocker

Paul Benjamin as Artis

Clifford A. Pellow as Justin Pike

Jerry Hardin as Sheriff Mel Cobb

Fredric Cook as Leo Stafford

Steven Peterman as Arthur Vitale

James O'Connell as Warden

Jon Locke as Supervisor

Gary Grubbs as Deputy Hamilton

Seamon Glass as Prison Guard

Gwen Van Dam as Mrs. Lawrence

James Brodhead as Court Crier

Edmund H. North as Supreme Court Justice

Emmet Lavery as Supreme Court Justice

Liam O'Brien as Supreme Court Justice

Don Draper as Bailiff

Henry Proach as Guard

Anthony Lewis as The Reporter

Timothy Scott as Toby

Blake Clark as Jail Librarian (uncredited)

Luther Fear as Convict with Gideon (uncredited)