Charles Laughton as The Hunchback Quasimodo

Cedric Hardwicke as Frollo

Thomas Mitchell as Clopin

Maureen O'Hara as Esmeralda

Edmond O'Brien as Gringoire

Alan Marshal as Phoebus

Walter Hampden as Archdeacon

Harry Davenport as King Louis XI

Katharine Alexander as Madame de Lys

George Zucco as Procurator

Fritz Leiber as Old Nobleman

Etienne Girardot as Doctor

Helene Reynolds as Fleur de Lys

Minna Gombell as Queen of Beggars

Arthur Hohl as Olivier

Curt Bois as Student

George Tobias as Beggar

Rod La Rocque as Phillippe

Spencer Charters as Court Clerk

Kathryn Adams as Fleur's Companion #1

Diane Hunter as Fleur's Companion #2

Sig Arno as Tailor

Frank Mills as Beggar (uncredited)

Dewey Robinson as Butcher (uncredited)

Frank Mazzola as Child (uncredited)

Alan Copeland as Choirboy (uncredited)

Arthur Millett as Count Graville (uncredited)

Ferdinand Munier as Defense Attorney (uncredited)

Barlowe Borland as Dubois (uncredited)

Victor Kilian as Esmeralda's Hangman (uncredited)

James Fawcett as Festival Ball-Walker (uncredited)

Alan Spear as Festival Contortionist (uncredited)

Ward Shattuck as Festival Juggler (uncredited)

Ray Long as Festival Skeleton Dancer (uncredited)

Lillian Nicholson as Fleur's Servant (uncredited)

Gisela Werbisek as Grandmother (uncredited)

Harry Cording as Guard (uncredited)

Angela Mulinos as Helene (uncredited)

Lionel Belmore as Judge at Esmeralda's Trial (uncredited)

Earl Clyde as Juggler (uncredited)

Thom Fox as Jupiter (uncredited)

Gretl Dupont as Lissy (uncredited)

Tempe Pigott as Madeleine (uncredited)

Nestor Paiva as Man in Street When Gypsies Arrive (uncredited)

Arthur Dulac as Mars (uncredited)

Vallejo Gantner as Merchant (uncredited)

Charlie Hall as Mercury (uncredited)

George Barrows as Minor Role (uncredited)

Peter Godfrey as Monk (uncredited)

Edward Groag as Moon (uncredited)

J. C. Fowler as Nobleman (uncredited)

Cy Kendall as Nobleman Signing Petition (uncredited)

Charles Halton as Printer (uncredited)

Norbert Schiller as Saturn (uncredited)

Eddie Abdo as Singer (uncredited)

Alexander Granach as Soldier (uncredited)

Edmund Cobb as Soldier (uncredited)

Ralph Dunn as Soldier (uncredited)

Eddie Bracken as Soldier at Festival of Fools (uncredited)

Harold DeGarro as Stilt Walker (uncredited)

Louis Zamperini as Street Urchin (uncredited)

John George as Townsman (uncredited)

Kenner G. Kemp as Townsman (uncredited)

Rondo Hatton as Ugly Man (uncredited)

Vangie Beilby as 'Ugly Man' Contestant #1 (uncredited)

Russ Powell as 'Ugly Man' Contestant #2 (uncredited)

Louis Adlon as Venus (uncredited)

Paul Newlan as Whipper (uncredited)

Dick Dickinson as Wooden-Leg Man (uncredited)

Joseph P. Mack as Workman in Play (uncredited)

Charles Drake as Young Priest (uncredited)

Richard Clayton as Young Priest at Cathedral (uncredited)

Billy Jones as (uncredited)

Theodore Lorch as Minor Role (uncredited)

Eddie Dew as Minor Role (uncredited)

Margaret McWade as Younger Sister (uncredited)

Jack Perrin as Minor Role (uncredited)

Hector V. Sarno as Knight (uncredited)

Margaret Seddon as Older Sister (uncredited)