| name | character |
|
Luther Adler
|
Professor Weiler
|
|
Keith Barron
|
Purser Mueller
|
|
Luis Ciges
|
President Bru's Secretary (uncredited)
|
|
Michael Constantine
|
Luis Clasing
|
|
Ian Cullen
|
Radio Officer
|
|
David Daker
|
First Officer
|
|
Faye Dunaway
|
Denise Kreisler
|
|
Denholm Elliott
|
Admiral Canaris
|
|
José Ferrer
|
Manuel Benitez
|
|
Lynne Frederick
|
Anna Rosen
|
|
Ben Gazzara
|
Troper
|
|
Laura Gemser
|
Estedes' Friend (uncredited)
|
|
Brian Gilbert
|
Laurenz Schulman
|
|
Lee Grant
|
Lili Rosen
|
|
Constantine Gregory
|
Navigation Officer
|
|
Helmut Griem
|
Otto Schiendick
|
|
Georgina Hale
|
Lotte Schulman
|
|
Julie Harris
|
Alice Fienchild
|
|
Don Henderson
|
Engineering Officer
|
|
Bernard Hepton
|
Milton Goldsmith
|
|
Anthony Higgins
|
Seaman Berg
|
|
Wendy Hiller
|
Rebecca Weiler
|
|
Donald Houston
|
Dr. Glauner
|
|
Frederick Jaeger
|
Werner Mannheim
|
|
Bernard Kay
|
Cuba Harbour Pilot (uncredited)
|