Mare Nostrum: Reparto
Apollon Uni
The Triton (prologue) (as Uni Apollon)
Álex Nova
Don Esteban Ferragut (prologue) (as Alex Nova)
Kada-Abd-el-Kader
Don Esteban's Son - Ulysses (prologue)
Hughie Mack
Caragol (prologue)
Alice Terry
Freya Talberg
Antonio Moreno
Ulysses Ferragut
Mademoiselle Kithnou
Ferragut's Wife - Dona Cinta (as Mle. Kithnou)
Mickey Brantford
Ferragut's Son - Esteban (as Michael Brantford)
Rosita Ramírez
Ferragut's Niece - Pepita
Frédéric Mariotti
Toni - the Mate (as Fredrick Mariotti)
Madame Pâquerette
Doctor Fedelmann (as Mme. Paquerette)
Fernand Mailly
Count Kaledine
Andrews Engelmann
Submarine Commander (as André von Engelman)
John George
Servant (uncredited)