Boris Livanov

Dick Arrowsmith

Maksim Shtraukh

Samuel Wolfe

Sergey Tikhonravov

Garreth

Viktor Stanitsyn

Bill Steer

Andrei Abrikosov

Engineer Nikitin

Sergei Tsenin

Sazonov

Aleksey Dolinin

Gaydar

Dmitriy Kara-Dmitriev

Bistayev

Vera Maretskaya

Comrade Olga

Vladimir Uralskiy

Gostev

Oswald Glazunov

Rector (uncredited)

Lyudmila Glazova

Felice (uncredited)

Ivan Chuvelyov

Arrowsmith's guest

Leonid Obolensky

The reporter (uncredited)