Gregory Peck
Capt. Horatio Hornblower R.N
Denis O'Dea
RAdm. Sir Rodney Leighton
Richard Hearne
Polwheal (Hornblower's Batman)
Alec Mango
El Supremo (Don Julian Alvarado)
Michael Goodliffe
Col. Caillard - POW Escort
Ingeborg von Kusserow
Hebe (Lady Barbara's Maid)
Amy Veness
Mrs. McPhee (Hornblower's Housekeeper)
Basil Bartlett
Capt. Elliott (uncredited)
André Belhomme
French Guard (uncredited)
Robert Cawdron
"Witch of Endor" French Mate (uncredited)
Diane Cilento
Maria Hornblower (voice) (uncredited)
Howard Connell
"Lydia" Seaman (uncredited)
Alexander Davion
Spanish Officer (uncredited)
Anthony Forwood
Lt. Woodford (uncredited)
Arthur Gomez
French Corvette Captain (uncredited)
Howard Lang
Officer Aboard Cassandra (uncredited)
Jim Brady
Bosun's Mate (uncredited)
Sam Kydd
Seaman Garvin (uncredited)
Anthony Marlowe
Capt. Bolton (uncredited)
Michael Mellinger
Spanish Officer (uncredited)
Julio Monterde
Spanish Officer (uncredited)
Derek Sydney
Capt. Elliott (uncredited)
Jack Watson
Capt. Sylvester (uncredited)
