Paul Muni as Benito Pablo Juárez

Bette Davis as Empress Carlotta von Hapsburg

Brian Aherne as Emperor Maximilian von Hapsburg

Claude Rains as Emperor Louis Napoleon III

John Garfield as General Porfirio Diaz

Donald Crisp as Maréchal Bazaine

Joseph Calleia as Alejandro Uradi

Gale Sondergaard as Empress Eugenie

Gilbert Roland as Colonel Miguel Lopez

Henry O'Neill as General Miguel Miramon

Harry Davenport as Dr. Samuel Basch

Louis Calhern as LeMarc

Walter Kingsford as Prince Richard Metternich

Georgia Caine as Lady in Waiting

Montagu Love as Jose de Montares

John Miljan as Mariano Escobedo

Vladimir Sokoloff as Camilo

Irving Pichel as General Carbajal

Pedro de Cordoba as Riva Palacio

Monte Blue as Lerdo de Tajada

Manuel Díaz as Pepe

Hugh Sothern as John Bigelow

Mickey Kuhn as Augustin Iturbide

Billy Wilkerson as Tomas Mejia

Martín Garralaga as Negroni

Frank Lackteen as Coachman

Egon Brecher as Baron von Magnus (uncredited)

Gennaro Curci as Señor de Leon (uncredited)

Carlos De Valdez as Tailor (uncredited)

Claudia Dell as Agnes Salm (uncredited)

Claire Du Brey as Woman (uncredited)

Walter Fenner as Achille Fould (uncredited)

Robert Frazer as (uncredited)

Holmes Herbert as Marshal Randon (uncredited)

Stuart Holmes as Soldier with Letter to Maximilian (uncredited)

Noble Johnson as General Regules (uncredited)

Alexander Leftwich as Drouyn de Lhuys (uncredited)

Fred Malatesta as Señor Salas (uncredited)

Lillian Nicholson as Josefa Iturbide (uncredited)

Paul Porcasi as Councilman in Meeting with Maximilian (uncredited)

Guy Bates Post as (uncredited)

Pedro Regas as Antonio Regales (uncredited)

Frank Reicher as Duc de Morny (uncredited)

Jason Robards Sr. as (uncredited)

Dewey Robinson as Soldier Collecting Signatures (uncredited)

Walter O. Stahl as Senator de Valle (uncredited)

Michael Visaroff as (uncredited)

Robert Warwick as Major Du Pont (uncredited)

Douglas Wood as Mr. Hartman (uncredited)