Viktor Dobrovolsky

as Makar Nechay

Valentyna Ivashova

as Galya

Anton Dunaiskyi

as Panas Timofeyich

Vasiliy Zaychikov

as Aleksey Adamov

Fyodor Dubrovskiy

as Academician Stepan Olenin

Nina Alisova

as Natalya Stakhova, Adamov's aspirant

Aleksey Maksimov

as Ilya Vladimirov, graduate student