นักแสดง
Эрвин Кнаусмюллер
rewarding person (uncredited)
Александр Грузинский
Gervasiy Fedoseyevich
Георгий Куликов
Nikolai Lvovich
Леонид Евтифьев
member of the academic council
Александр Потапов
Taras
Леонид Брусин
Vikentiy
Gennady Bolibok
Yukhan
Павел Винник
Shatrov
Кларина Фролова
Alyona's grandmother
Вячеслав Гостинский
member of the American delegation (uncredited)
Аркадий Цинман
speaker at the academic Council in MAI
Marina Vlady
Self (uncredited)
Валентина Ананьина
Aleksei Ivanovich's companion (uncredited)
Валентин Смирнитский
Vasiliy
Иван Бычков
longshoreman
Алексей Бахарь
pilot (uncredited)
Лариса Жуковская
princessa Christina
Вячеслав Захаров
Seva
Пётр Репнин
member of the academic Council (uncredited)
Семён Бардин
member of the academic Council (uncredited)
Леонид Чубаров
trainer
Георгий Светлани
Alyona's grandfather
Eugeny Agurov
head of the American delegation
Thomas Holtzmann
Self (uncredited)
Инна Кондратьева
member of the academic Council (uncredited)
Ольга Наровчатова
student-rower (uncredited)
Наталья Кустинская
Alyona
Александр Ханов
Aleksei Ivanovich
Олег Мокшанцев
Soluyanov
Ирина Мирошниченко
Violetta
Владимир Липпарт
member of the academic Council
Николай Толкачёв
member of the academic Council
Юрий Цурило
Marko
Филимон Сергеев
Kirill
Виктор Яковлев
Alyona's relative
Александр Леньков
Lyonya