Gary Cooper

Howard Roark

Patricia Neal

Dominique Francon

Raymond Massey

Gail Wynand

Kent Smith

Peter Keating

Robert Douglas

Elsworth Toohey

Henry Hull

Henry Cameron

Ray Collins

Roger Enright

Moroni Olsen

Chairman

Jerome Cowan

Alvah Scarret

John Alvin

Young Intellectual (uncredited)

Morris Ankrum

Prosecutor (uncredited)

Griff Barnett

Judge (uncredited)

Monte Blue

Gas Station Executive (uncredited)

Gail Bonney

Woman (uncredited)

Glen Cavender

Pedestrian Onlooker (uncredited)

Dorothy Christy

Society Woman (uncredited)

Tris Coffin

Toohey's Secretary (uncredited)

G. Pat Collins

Jury Foreman (uncredited)

Ann Doran

Wynand's Secretary (uncredited)

Lester Dorr

Minor Role (uncredited)