 William HoldenEric Erickson | Eric Erickson |
 Lilli PalmerMs. Marianne Möllendorf | Ms. Marianne Möllendorf |
 Hugh GriffithCollins | Collins |
 Carl RaddatzOtto Holtz | Otto Holtz |
 Ernst SchröderBaron Gerhard von Oldenburg | Baron Gerhard von Oldenburg |
 Charles RegnierWilhelm Kortner | Wilhelm Kortner |
 Ingrid van BergenHulda Windler | Hulda Windler |
 Wolfgang PreissColonel Nordoff | Colonel Nordoff |
 Werner PetersBruno Ulrich | Bruno Ulrich |
 Erica BeerKlara Holtz | Klara Holtz |
 Stefan SchnabelGestapo agent at funeral | Gestapo agent at funeral |
 Klaus KinskiKindler | Kindler |
 Erik SchumannNazi Gunboat Officer | Nazi Gunboat Officer |
 Poul ReichhardtFishing Boat Skipper | Fishing Boat Skipper |
 John WittigSven | Sven |
 Louis Miehe-RenardPoul | Poul |
 Kai HolmGunnar | Gunnar |
 Jens ØsterholmLars | Lars |
 Eva DahlbeckIngrid Erickson | Ingrid Erickson |
 Ulf PalmeMax Gumpel | Max Gumpel |
 Jørgen KroghNot listed | Not listed |
 Helo GutschwagerHans Holtz (uncredited) | Hans Holtz (uncredited) |
| JJochen BlumeDr. Jacob Karp (uncredited) | Dr. Jacob Karp (uncredited) |
| DDirk HansenLieutenant Nagler (uncredited) | Lieutenant Nagler (uncredited) |
 Günter MeisnerPriest (uncredited) | Priest (uncredited) |
 Phil BrownHarold Murray (uncredited) | Harold Murray (uncredited) |
| MMax BuchsbaumFischer (uncredited) | Fischer (uncredited) |
 Peter CapellUnger (uncredited) | Unger (uncredited) |
 Ejner FederspielProf. Christiansen (uncredited) | Prof. Christiansen (uncredited) |
| EEva FiebigMs. Hecker (uncredited) | Ms. Hecker (uncredited) |
