Aleksandr Antonov

as Anton Mikhailovich Kulagin

Nikolay Kryuchkov

as Stepan Kulagin

Daniil Sagal

as Pavel Lugovoj

Zoya Fyodorova

as Dunya Velichko

Aleksandr Zrazhevsky

as Vladimir Nikolaevich Sokolov

Nikolai Konovalov

as Miner Zaika / Dr. Starkovsky

Pyotr Savin

as Sliva

Emanuel Apkhaidze

as Sergo Ordzhonikidze

Iona Biy-Brodskiy

as Vasiliy Grigoryevich, medic

Nikolai Yudin

Andrei Tutyshkin

Tatyana Barysheva

Ivan Lobyzovskiy

Boris Barnet

Aleksey Dolinin

Fyodor Odinokov

Gavriil Belov

Sergei Antimonov

as Commission member (uncredited)

Valentina Karavayeva

Vera Okuneva

as Marya Trofimovna, Stepan Kulagin's mother

Maria Klyuchareva

as Dunya's friend

Vladimir Batalov

as Andrey Poplavskiy, mine director