Gary Cooper (Howard Roark),
Robert Douglas (Elsworth Toohey),
Bob Alden (Newsboy (uncredited)),
John Alvin (Young Intellectual (uncredited)),
Morris Ankrum (Prosecutor (uncredited)),
Lois Austin (Female Party Guest (uncredited)),
Griff Barnett (Judge (uncredited)),
Monte Blue (Gas Station Executive (uncredited)),
Gail Bonney (Woman (uncredited)),
Ralph Brooks (Courtroom Spectator (uncredited)),
Glen Cavender (Pedestrian Onlooker (uncredited)),
Dorothy Christy (Society Woman (uncredited)),
Tristram Coffin (Toohey's Secretary (uncredited)),
Ray Collins (Roger Enright),
Jerome Cowan (Alvah Scarret),
Henry Hull (Henry Cameron),
Raymond Massey (Gail Wynand),
Patricia Neal (Dominique Francon),
Moroni Olsen (Chairman),
Kent Smith (Peter Keating)