 Sydney GreenstreetMr. Peters | Mr. Peters |
 Zachary ScottDimitrios Makropoulos | Dimitrios Makropoulos |
 Faye EmersonIrana Preveza | Irana Preveza |
 Peter LorreCornelius Leyden | Cornelius Leyden |
 Victor FrancenWladislaw Grudek | Wladislaw Grudek |
 Steven GerayKarel Bulic | Karel Bulic |
 Florence BatesMadame Elise Chavez | Madame Elise Chavez |
 Eduardo CiannelliMarukakis | Marukakis |
 Kurt KatchColonel Haki | Colonel Haki |
 Marjorie HoshelleAnna Bulic | Anna Bulic |
 Georges MetaxaHans Werner | Hans Werner |
 John AbbottMr. Pappas | Mr. Pappas |
 Monte BlueAbdul Dhris | Abdul Dhris |
 David HoffmanKonrad | Konrad |
 Charles AndreFrench Train Conductor (uncredited) | French Train Conductor (uncredited) |
 Vince BarnettCard Game Kibitzer (uncredited) | Card Game Kibitzer (uncredited) |
 Felix BaschVazoff (uncredited) | Vazoff (uncredited) |
| EEdward BibyNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
 Ted BillingsBar Patron (uncredited) | Bar Patron (uncredited) |
 John BleiferCoach Driver (uncredited) | Coach Driver (uncredited) |
| JJames CarlisleNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
 Jack ChefeCasino Patron (uncredited) | Casino Patron (uncredited) |
 Gino CorradoMan at Grudek's Restaurant Table (uncredited) | Man at Grudek's Restaurant Table (uncredited) |
| CCarmen D'AntonioNightclub Dancer (uncredited) | Nightclub Dancer (uncredited) |
| RRay De RavenneFrench Taxi Driver (uncredited) | French Taxi Driver (uncredited) |
| CCarl DeloroMinor Role (uncredited) | Minor Role (uncredited) |
| HHelen DicksonCasino Patron (uncredited) | Casino Patron (uncredited) |
 Fred EsslerMr. Bostoff (uncredited) | Mr. Bostoff (uncredited) |
| TTom FerrandiniNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
| EEddie FieldsTrain Conductor (uncredited) | Train Conductor (uncredited) |
