Capt. Horatio Hornblower R.N
Lady Barbara Wellesley
Lt. William Bush
Lt. Crystal
2nd Lt. Gerard
Midshipman Longley
Seaman Quist
RAdm. Sir Rodney Leighton
Polwheal (Hornblower's Batman)
Surgeon Gundarson
Mr. Harrison (Bosun)
Hernandez
El Supremo (Don Julian Alvarado)
Spanish Captain
Capt. Entenza
Col. Caillard - POW Escort
French Commandant
Hebe (Lady Barbara's Maid)
Mrs. McPhee (Hornblower's Housekeeper)
Adm. Lord Hood
Adm. McCartney
Crewman (uncredited)
Capt. Elliott (uncredited)
French Guard (uncredited)
Crewman (uncredited)
"Witch of Endor" French Mate (uncredited)
Maria Hornblower (voice) (uncredited)
"Lydia" Seaman (uncredited)
Spanish Officer (uncredited)
Crewman (uncredited)
Seaman (uncredited)
Lt. Woodford (uncredited)
French Corvette Captain (uncredited)
Crewman (uncredited)
Macrae (uncredited)