Gregory Peck
Capt. Horatio Hornblower R.N
Acting
Virginia Mayo
Lady Barbara Wellesley
Acting
Robert Beatty
Lt. William Bush
Acting
Moultrie Kelsall
Lt. Crystal
Acting
Terence Morgan
2nd Lt. Gerard
Acting
James Kenney
Midshipman Longley
Acting
James Robertson Justice
Seaman Quist
Acting
Denis O'Dea
RAdm. Sir Rodney Leighton
Acting
Richard Hearne
Polwheal (Hornblower's Batman)
Acting
Michael Dolan
Surgeon Gundarson
Acting
Stanley Baker
Mr. Harrison (Bosun)
Acting
Alan Tilvern
Hernandez
Acting
Alec Mango
El Supremo (Don Julian Alvarado)
Acting
Christopher Lee
Spanish Captain
Acting
John Witty
Capt. Entenza
Acting
Michael Goodliffe
Col. Caillard - POW Escort
Acting
Eugene Deckers
French Commandant
Acting
Ingeborg von Kusserow
Hebe (Lady Barbara's Maid)
Acting
Amy Veness
Mrs. McPhee (Hornblower's Housekeeper)
Acting
Kynaston Reeves
Adm. Lord Hood
Acting
Ronald Adam
Adm. McCartney
Acting
Chris Adcock
Crewman (uncredited)
Acting
Basil Bartlett
Capt. Elliott (uncredited)
Writing
André Belhomme
French Guard (uncredited)
Acting
David Birks
Crewman (uncredited)
Acting
Robert Cawdron
"Witch of Endor" French Mate (uncredited)
Acting
Diane Cilento
Maria Hornblower (voice) (uncredited)
Acting
Howard Connell
"Lydia" Seaman (uncredited)
Acting
Alexander Davion
Spanish Officer (uncredited)
Acting
Steve Donahue
Crewman (uncredited)
Acting
Patric Doonan
Seaman (uncredited)
Acting
Anthony Forwood
Lt. Woodford (uncredited)
Acting
Arthur Gomez
French Corvette Captain (uncredited)
Acting
Lindsay Hooper
Crewman (uncredited)
Acting
Richard Johnson
Macrae (uncredited)
Acting