Dmitri Dorlyak

Grisha Fokin

Olga Zhiznyeva

Masha Stepanova

Yuri Yuryev

Professor Yuliyan Stepanov

Maksim Shtraukh

Fyodor Tsitronov

Valentina Serova

Liza

Georgiy Sochevko

Kolya

Irina Volodko

Olga

Aleksandr Chistyakov

Olga's Father

Dmitri Golubinsky

Surgeon Ivan Germanovich

Ekaterina Melnikova

Grisha's Mother

Yekaterina Gureykina

Katya, Grisha's Neighbour

Ivan Kononenko-Kozelskyi

Olga's Husband

Ivan Koval-Samborskyi

Sailor

Dmitri Konsovsky

Grisha Fokin (uncredited)

Pyotr Repnin

Kolya's Uncle (uncredited)