Characters played by Paul Muni
Louis Pasteur
Characters played by Josephine Hutchinson
Marie Pasteur
Characters played by Anita Louise
Annette Pasteur
Characters played by Donald Woods
Dr. Jean Martel
Characters played by Fritz Leiber
Dr. Charbonnet
Characters played by Henry O'Neill
Dr. Emile Roux
Characters played by Porter Hall
Dr. Rossignol
Characters played by Raymond Brown
Dr. Radisse
Characters played by Akim Tamiroff
Dr. Zaranoff
Characters played by Halliwell Hobbes
Dr. Lister
Characters played by Frank Reicher
Dr. Pfeiffer
Characters played by Dickie Moore
Joseph Meister
Characters played by Ruth Robinson
Mrs. Meister
Characters played by Walter Kingsford
Napoleon III
Characters played by Iphigenie Castiglioni
Empress Eugénie
Characters played by Herbert Corthell
Louis Adolphe Thiers 1st President Republic of France
Characters played by Richard Alexander
Burly Farmer
Characters played by Manson Behfeld
Farm Boy
Characters played by George Beranger
Assistant
Characters played by J. Bonini
Intern
Characters played by William Burgess
Doctor François
Characters played by Wheaton Chambers
Alsatian
Characters played by Mabel Colcord
A Lady
Characters played by Frank Darien
Academy Member
Characters played by Eddie Dew
Man
Characters played by Bill Elliott
Reporter
Characters played by Alphonse Ethier
Finance Minister
Characters played by Florence Fair
Undetermined Role
Characters played by Ralph Fitzsimmons
Doctor
Characters played by Brenda Fowler
Midwife
Characters played by Blanche Franke
Nurse
Characters played by Otto Fries
Servant
Characters played by Baron Hesse
Fat Doctor
Characters played by Herbert Heywood
Boncourt
Characters played by Otto Hoffman
Farmer
Characters played by Isabel La Mal
Maid
Characters played by Wilfred Lucas
Reporter
Characters played by Eric Mayne
Lord Chamberlain
Characters played by Frank Mayo
Sadi Carnot
Characters played by Leonard Mudie
Coachman
Characters played by Jean Perry
Doctor
Characters played by Frederick Peters
Blacksmith
Characters played by John Picorri
Doctor
Characters played by Tempe Pigott
Woman
Characters played by Jack Santoro
Reporter
Characters played by Ferdinand Schumann-Heink
Reporter
Characters played by C. Montague Shaw
British Reporter
Characters played by Leonid Snegoff
Russian Ambassador
Characters played by Robert Strange
Magistrate
Characters played by Anders Van Haden
Undetermined Role
Characters played by Edward Van Sloan
Chairman of Medical Society
Characters played by Fred Walton
Government Inspector
Characters played by Frank Ward
Child
Characters played by Paul Weigel
Undetermined Role
Characters played by Niles Welch
Courier with Letter
Characters played by Marie Wells
Nurse
Characters played by Lottie Williams
Cecile