Captain Horatio Hornblower R.N.

Gregory Peck

Capt. Horatio Hornblower R.N

Virginia Mayo

Lady Barbara Wellesley

Robert Beatty

Lt. William Bush

Moultrie Kelsall

Lt. Crystal

Terence Morgan

2nd Lt. Gerard

James Kenney

Midshipman Longley

James Robertson Justice

Seaman Quist

Denis O'Dea

RAdm. Sir Rodney Leighton

Richard Hearne

Polwheal (Hornblower's Batman)

Michael Dolan

Surgeon Gundarson

Stanley Baker

Mr. Harrison (Bosun)

Alan Tilvern

Hernandez

Alec Mango

El Supremo (Don Julian Alvarado)

Christopher Lee

Spanish Captain

John Witty

Capt. Entenza

Michael Goodliffe

Col. Caillard - POW Escort