Вера Янукова
— Sonka
Nadezhda Yermakovich
— Margarita Ivanovna
Мария Горичева
— Engineer Sadovskiy's mother
Михаил Астангов
— Kostya Kapitan
Борис Добронравов
— Director Gromov
Aleksandr Cheban
— Big official
Михаил Яншин
— Maks
Борис Тамарин
— Engineer Yuriy Sadovskiy
Геннадий Мичурин
— Botkin
Pavel Olenev
— Sasha
Константин Назаренко
— Limon
Александр Антонов
— Vanya (uncredited)
Василий Бокарев
— Camp superintendent (uncredited)
Марк Бернес
— Convict (uncredited)
Константин Градополов
— Pyzhov (uncredited)
Владимир Дорофеев
— Steamboat captain (uncredited)
Лев Иванов
— Beret (uncredited)
Мария Ключарева
— Ninka (uncredited)
Серафим Козьминский
— Petin (uncredited)
Вячеслав Новиков
— Mitya (uncredited)
Елена Понсова
— Fefela (uncredited)
Людмила Садикова
— Convict (uncredited)
Владимир Уральский
— Convict (uncredited)
A. Trushin
— (uncredited)
Aleksandr Duletov
— (uncredited)