Jan Kanyza
— Karel Vojta
Валентина Шендрикова
— Dr. Margarita Aleksandrovna
Борис Щербаков
— Arkadiy Voyvodin
Anatoli Solonitsyne
— Lev Nikolayevich Slivin
Виктор Гоголев
— Aleksandr Aleksandrovich Borisov
Евгений Леонов-Гладышев
— Misha
Vladimír Ráž
— Josef Vendler
Vítězslav Jandák
— Sláveček Žlabíček
Jan Pohan
— Šembera
Jan Krafka
— Lukeš
Виктор Ильичёв
— Viktor
Tomáš Sedláček
— Young Designer
Jiří Lír
— Engineer
Miloslav Homola
— Engineer
Žofie Veselá
— Nurse
Hana Čížková
— Blonde
Jitka Zelenohorská
— Shop Assistant
Olga Blechová
— Shop Assistant
Jarmila Smejkalová
— Karel's Mother
Нина Русланова
— Coordinator
Bohumil Švarc
— Chief Engineer
Dušan Kuric
— Driver
Milan Pěkný
— Driver
Ľudovít Sleš
— Driver
Павел Кашлаков
— Inspector
Jorga Kotrbová
— Dr. Margarita Aleksandrovna (voice)
Miroslav Moravec
— Arkadiy Voyvodin (voice)
František Vicena
— Lev Nikolayevich Slivin (voice)
Otakar Brousek
— Aleksandr Aleksandrovich Borisov (voice)
Jiří Novotný
— Misha (voice)