Jean Peters as Captaine Anne Providence

Louis Jourdan as Captaine Pierre François LaRochelle

Debra Paget as Molly LaRochelle

Herbert Marshall as Dr Jameson

Thomas Gomez as Captaine Edward Teach alias Blackbeard

James Robertson Justice as Red Dougal

Francis Pierlot as Herkimer

Sean McClory as Hackett

Holmes Herbert as English Sea Captain

Byron Nelson as Bear Handler

Douglas Bennett as Bear Wrestler

Mario Siletti as Slave Market Auctioneer

Robert R. Stephenson as Tavern Host (as Bob Stephenson)

Carleton Young as Pirate Mate