Michael Craig

Capt. Cyrus Harding

Joan Greenwood

Lady Mary Fairchild

Michael Callan

Herbert Brown

Gary Merrill

Gideon Spilitt

Herbert Lom

Captain Nemo

Beth Rogan

Elena Fairchild

Percy Herbert

Sgt. Pencroft

Dan Jackson

Cpl. Neb Nugent

Harry Monty

Pirate (uncredited)