Mary Badham 
 as Scout Finch

Gregory Peck 
 as Atticus Finch

Phillip Alford 
 as Jem

John Megna 
 as Dill Harris

Frank Overton 
 as Sheriff Heck Tate

Brock Peters 
 as Tom Robinson

Rosemary Murphy 
 as Maudie Atkinson

Ruth White 
 as Mrs. Dubose

Estelle Evans 
 as Calpurnia

Paul Fix 
 as Judge Taylor

Collin Wilcox Paxton 
 as Mayella Violet Ewell

James Anderson 
 as Bob Ewell

Alice Ghostley 
 as Aunt Stephanie Crawford

Robert Duvall 
 as Boo Radley

William Windom 
 as Mr. Gilmer

Crahan Denton 
 as Walter Cunningham Sr.

Richard Hale 
 as Nathan Radley

R. L. Armstrong 
 as Man (uncredited)

Walter Bacon 
 as Courtroom Spectator (uncredited)

Eddie Baker 
 as Courtroom Spectator (uncredited)

Bobby Barber 
 as Courtroom Spectator (uncredited)

John Barton 
 as Courtroom Spectator (uncredited)

Audrey Betz 
 as Courtroom Spectator (uncredited)

Danny Borzage 
 as Courtroom Spectator (uncredited)

John Breen 
 as Juror (uncredited)

Jess Cavin 
 as Juror (uncredited)

Noble 'Kid' Chissell 
 as Courtroom Spectator (uncredited)

Steve Condit 
 as Walter Cunningham Jr. (uncredited)

David Crawford 
 as David Robinson (uncredited)

Frank Ellis 
 as Juror (uncredited)

Charles Fredericks 
 as Court Clerk (uncredited)

Herman Hack 
 as Courtroom Spectator (uncredited)

Jester Hairston 
 as Spence Robinson (uncredited)

Chuck Hamilton 
 as Courtroom Spectator (uncredited)

Kim Hamilton 
 as Helen Robinson (uncredited)

Kim Hector 
 as Cecil Jacobs (uncredited)

Michael Jeffers 
 as Courtroom Spectator (uncredited)

Dick Johnstone 
 as Courtroom Spectator (uncredited)

Chester Jones 
 as Courtroom Spectator (uncredited)

Colin Kenny 
 as Courtroom Spectator (uncredited)

Ethan Laidlaw 
 as Townsman (uncredited)

Nancy Marshall 
 as Schoolteacher (uncredited)

Clyde McLeod 
 as Courtroom Spectator (uncredited)

Charles Morton 
 as Courtroom Spectator (uncredited)

Paulene Myers 
 as Jesse (uncredited)

William H. O'Brien 
 as Courtroom Spectator (uncredited)

Charles Perry 
 as Juror (uncredited)

Joe Ploski 
 as Courtroom Spectator (uncredited)

Hugh Sanders 
 as Dr. Reynolds (uncredited)

Barry Seltzer 
 as Schoolboy (uncredited)

Edward C. Short 
 as Courtroom Spectator (uncredited)

Mabel Smaney 
 as Courtroom Spectator (uncredited)

Eddie Smith 
 as Courtroom Spectator (uncredited)

Walter Smith 
 as Courtroom Spectator (uncredited)

Cap Somers 
 as Courtroom Spectator (uncredited)

George Sowards 
 as Courtroom Spectator (uncredited)

Ray Spiker 
 as Townsman (uncredited)

Kim Stanley 
 as Scout as an Adult - Narrator (voice) (uncredited)

Kelly Thordsen 
 as Burly Mob Member (uncredited)

Arthur Tovey 
 as Juror (uncredited)

George Tracy 
 as Townsman (uncredited)

Sailor Vincent 
 as Courtroom Spectator (uncredited)

Max Wagner 
 as Courtroom Spectator (uncredited)

Bill Walker 
 as Reverend Sykes (uncredited)

Joe Walls 
 as Bailiff (uncredited)

Dan White 
 as Mob Leader (uncredited)

Guy Wilkerson 
 as Jury Foreman (uncredited)

Chalky Williams 
 as Courtroom Spectator (uncredited)

Raoul Freeman 
 as Courtroom Spectator (uncredited)