 | Jan Kanyza als Karel Vojta |
 | Valentina Shendrikova als Dr. Margarita Aleksandrovna |
 | Boris Shcherbakov als Arkadiy Voyvodin |
 | Anatoliy Solonitsyn als Lev Nikolayevich Slivin |
 | Viktor Gogolev als Aleksandr Aleksandrovich Borisov |
 | Evgeniy Leonov-Gladyshev als Misha |
 | Vladimír Ráž als Josef Vendler |
 | Vítězslav Jandák als Sláveček Žlabíček |
 | Jan Pohan als Šembera |
 | Jan Krafka als Lukeš |
 | Viktor Ilichyov als Viktor |
| Tomáš Sedláček als Young Designer |
 | Jiří Lír als Engineer |
 | Miloslav Homola als Engineer |
| Žofie Veselá als Nurse |
 | Hana Čížková als Blonde |
 | Jitka Zelenohorská als Shop Assistant |
| Olga Blechová als Shop Assistant |
 | Jarmila Smejkalová als Karel's Mother |
 | Nina Ruslanova als Coordinator |
 | Bohumil Švarc als Chief Engineer |
| Dušan Kuric als Driver |
| Milan Pěkný als Driver |
| Ľudovít Sleš als Driver |
| Pavel Kashlakov als Inspector |
 | Jorga Kotrbová als Dr. Margarita Aleksandrovna (voice) |
 | Miroslav Moravec als Arkadiy Voyvodin (voice) |
| František Vicena als Lev Nikolayevich Slivin (voice) |
 | Otakar Brousek als Aleksandr Aleksandrovich Borisov (voice) |
| Jiří Novotný als Misha (voice) |
 | Vilém Besser als Viktor (voice) |
 | Simona Stašová als Coordinator (voice) |
 | Miroslav Zounar als Inspector (voice) |
| Natalya Troshchenko | Director |
| Anatoli Vekhotko | Director |
| Miloš Brož | Creative Producer |
| Vladimír Zelenka | First Assistant Director |
| Valeri Bychenkov | First Assistant Director |
| Petr Makovička | Assistant Director |
| Aleksandr Gorokhov | Screenplay |
| Karel Valtera | Screenplay |
| Alexander Lukeš | Screenplay |
| Dmitriy Moldavskiy | Dramaturgy |
| Vladimír Bor | Dramaturgy |
| Věra Kalábová | Dramaturgy |
| Eduard Rozovsky | Director of Photography |
| Sergey Dvortsov | Camera Operator |
| Antonín Holub | Camera Operator |
| Jiří Ondráček | Assistant Camera |
| T. Plyusnina | Assistant Camera |
| Bohuslav Kulič | Production Design |
| Valeri Yurkevich | Production Design |
| Michal Krška | Assistant Production Design |
| Josef Müller | Set Decoration |
| Jan Petrů | Set Decoration |
| Elizaveta Sokolova | Set Decoration |
| Nelli Lev | Costume Design |
| Ludmila Ondráčková | Costumer |
| Jiřina Vrbová | Costumer |
| Ina Kotova | Costumer |
| František Čížek | Makeup & Hair |
| Libuše Beranová | Makeup & Hair |
| Boris Solovyov | Makeup & Hair |
| Raya Kravchenko | Makeup & Hair |
| Izolda Golovko | Editor |
| Grigori Elbert | Sound |
| Dmitriy Shulkin | Special Effects |
| Yuriy Verevkin | Special Effects |
| Jaromír Lukáš | Production Manager |
| Georgiy Gurov | Production Manager |
| Valeriy Plyushchay | Unit Production Manager |
| Jaroslav Vlk | Unit Production Manager |
| Igor Kolobov | Unit Production Manager |
| Mikhail Gerasimov | Unit Production Manager |
| Milana Melcerová | Unit Production Manager |
| Dagmar Pitráková | Assistant Production Manager |
| Jana Zavázalová | Clapper Loader |
| Jan Kuděla | Still Photographer |
| Igor Tsvetkov | Original Music Composer |
