| Spencer Tracy | Henry Drummond | 
    
    
      | Fredric March | Matthew Harrison Brady | 
    
    
      | Gene Kelly | E.K. Hornbeck | 
    
    
      | Dick York | Bertram T. Cates | 
    
    
      | Donna Anderson | Rachel Brown | 
    
    
      | Harry Morgan | Judge Mel | 
    
    
      | Claude Akins | Rev. Jeremiah Brown | 
    
    
      | Elliott Reid | Prosecutor Tom Davenport | 
    
    
      | Paul Hartman | Bailiff Mort Meeker | 
    
    
      | Philip Coolidge | Mayor Jason Carter | 
    
    
      | Jimmy Boyd | Howard | 
    
    
      | Noah Beery Jr. | John Stebbins | 
    
    
      | Norman Fell | WGN Radio Technician | 
    
    
      | Gordon Polk | George Sillers | 
    
    
      | Hope Summers | Mrs. Krebs - Righteous Townswoman | 
    
    
      | Ray Teal | Jessie H. Dunlap | 
    
    
      | Renee Godfrey | Mrs. Stebbins | 
    
    
      | Florence Eldridge | Sarah Brady | 
    
    
      | John Alban | Courtroom Spectator (uncredited) | 
    
    
      | Leon Alton | Townsman (uncredited) | 
    
    
      | Don Ames | Courtroom Spectator (uncredited) | 
    
    
      | Don Anderson | Courtroom Reporter (uncredited) | 
    
    
      | Eddie Baker | Courtroom Reporter (uncredited) | 
    
    
      | Frank Baker | Townsman (uncredited) | 
    
    
      | John Barton | Townsman (uncredited) | 
    
    
      | Brandon Beach | Townsman (uncredited) | 
    
    
      | Gail Bonney | Fundamentalist Woman (uncredited) | 
    
    
      | Chet Brandenburg | Courtroom Spectator (uncredited) | 
    
    
      | Brad Brown | Courtroom Photographer (uncredited) | 
    
    
      | Buck Bucko | Townsman (uncredited) | 
    
    
      | George Calliga | Courtroom Spectator (uncredited) | 
    
    
      | Dick Cherney | Townsman (uncredited) | 
    
    
      | Oliver Cross | Courtroom Reporter (uncredited) | 
    
    
      | Jack Daly | Eskimo Pie Vendor in Courtroom (uncredited) | 
    
    
      | Jack Deery | Townsman (uncredited) | 
    
    
      | Lester Dorr | Dr. John (uncredited) | 
    
    
      | George Dunn | Banker / Critic at Town Meeting (uncredited) | 
    
    
      | Donald Elson | Bollinger (uncredited) | 
    
    
      | Adolph Faylauer | Courtroom Reporter (uncredited) | 
    
    
      | Duke Fishman | Courtroom Spectator (uncredited) | 
    
    
      | Raoul Freeman | Courtroom Spectator (uncredited) | 
    
    
      | David Fresco | Threatening Spectator (uncredited) | 
    
    
      | Kay Garrett | Courtroom Spectator (uncredited) | 
    
    
      | Richard George | Young Farmer Carrying Burning Effigy (uncredited) | 
    
    
      | Helen Gereghty | Courtroom Spectator (uncredited) | 
    
    
      | Joseph Glick | Courtroom Spectator (uncredited) | 
    
    
      | James Gonzalez | Scientist (uncredited) | 
    
    
      | Signe Hack | Townswoman (uncredited) | 
    
    
      | Stuart Hall | Dr. Amos Keller (uncredited) | 
    
    
      | Joseph Hamilton | Man Yelling at Brady Welcome (uncredited) | 
    
    
      | Sam Harris | Townsman (uncredited) | 
    
    
      | Earle Hodgins | Dr. Britton's Tonic Spieler with Chimp (uncredited) | 
    
    
      | Tex Holden | Townsman (uncredited) | 
    
    
      | Wendell Holmes | Banker - Critic at City Meeting (uncredited) | 
    
    
      | Shep Houghton | Townsman (uncredited) | 
    
    
      | Colin Kenny | Courtroom Spectator (uncredited) | 
    
    
      | Johnny Kern | Courtroom Spectator (uncredited) | 
    
    
      | Perk Lazelle | Townsman (uncredited) | 
    
    
      | King Lockwood | Courtroom Spectator (uncredited) | 
    
    
      | Hank Mann | Townsman (uncredited) | 
    
    
      | Sandee Marriott | Courtroom Spectator (uncredited) | 
    
    
      | Thomas Martin | Reporter in Courtroom (uncredited) | 
    
    
      | Harp McGuire | Harry Esterbrook (uncredited) | 
    
    
      | Frank Mills | Courtroom Spectator (uncredited) | 
    
    
      | Hans Moebus | Townsman (uncredited) | 
    
    
      | Robert Osterloh | Sam - Deputy Arresting Cates (uncredited) | 
    
    
      | Stephen Paylow | Courtroom Spectator (uncredited) | 
    
    
      | Bob Perry | Courtroom Reporter (uncredited) | 
    
    
      | Joe Ploski | Courtroom Spectator (uncredited) | 
    
    
      | Harry 'Snub' Pollard | Townsman (uncredited) | 
    
    
      | Paul Power | Courtroom Spectator (uncredited) | 
    
    
      | Waclaw Rekwart | Courtroom Reporter (uncredited) | 
    
    
      | John Rice | Townsman (uncredited) | 
    
    
      | Addison Richards | Townsman (uncredited) | 
    
    
      | Leoda Richards | Woman Diner (uncredited) | 
    
    
      | Robert Robinson | Townsman (uncredited) | 
    
    
      | Scott Seaton | Courtroom Spectator (uncredited) | 
    
    
      | Leslie Sketchley | Bailiff (uncredited) | 
    
    
      | Stephen Soldi | Courtroom Reporter (uncredited) | 
    
    
      | Rudy Sooter | Courtroom Reporter (uncredited) | 
    
    
      | Bert Stevens | Courtroom Spectator (uncredited) | 
    
    
      | Hal Taggart | Juror (uncredited) | 
    
    
      | Harry Tenbrook | Courtroom Spectator (uncredited) | 
    
    
      | George Tracy | Courtroom Spectator (uncredited) | 
    
    
      | Charles Wagenheim | Hotel Clerk (uncredited) | 
    
    
      | Justice Watson | Hillsboro Salesman (uncredited) | 
    
    
      | Will Wright | Bible Salesman (uncredited) |