- Fred F. Ellis
- marine technical director (as Captain Fred Ellis Ret. B.M.M.)
- Pierre Asso
- french voice dubbing: Walter Slezak (uncredited)
- Clelia Bernacchi
- italian voice dubbing: Nancy Gates (uncredited)
- Jean Berton
- french voice dubbing: Victor Kilian (uncredited)
- Aline Bertrand
- french voice dubbing: Binnie Barnes (uncredited)
- Claude Bertrand
- french voice dubbing: Tom Kennedy (uncredited)
- Mario Besesti
- italian voice dubbing: Barton MacLane (uncredited)
- Nino Camarda
- italian voice dubbing: Dan Seymour (uncredited)
- Fred Cavens
- fencing choreographer (uncredited) / fencing trainer (uncredited)
- Olinto Cristina
- italian voice dubbing: Walter Slezak (uncredited)
- Raymonde Devarennes
- french voice dubbing: Maureen O'Hara (uncredited)
- William Dorfman
- assistant to second unit director (uncredited)
- Maurice Dorléac
- french voice dubbing: John Emery (uncredited)
- Émile Drain
- french voice dubbing: Fritz Leiber (uncredited)
- Gérard Férat
- french voice dubbing: Jack La Rue (uncredited)
- Georges Hubert
- french voice dubbing: Dan Seymour (uncredited)
- Tina Lattanzi
- italian voice dubbing: Binnie Barnes (uncredited)
- Jean Lemarguy
- french voice dubbing: J.M. Kerrigan (uncredited)
- Giulio Panicali
- italian voice dubbing: Paul Henreid (uncredited)
- Amilcare Pettinelli
- italian voice dubbing: Frtiz Leiber (uncredited)
- Cesare Polacco
- italian voice dubbing: Brandon Hurst (uncredited)
- Marcel Raine
- french voice dubbing: Barton MacLane (uncredited)
- Jacques Roux
- french voice dubbing: Paul Henreid (uncredited)
- Sandro Ruffini
- italian voice dubbing: John Emery (uncredited)
- Stefano Sibaldi
- italian voice dubbing: Curt Bois (uncredited)
- Lydia Simoneschi
- italian voice dubbing: Maureen O'Hara (uncredited)
- Paul Villé
- french voice dubbing: Brandon Hurst (uncredited)
