Частная жизнь Петра Виноградова

Boris Livanov

Pyotr Vinogradov, inventor

Valentin Tsishevskiy

Senya Kaufman

Konstantin Gradopolov

Kotya Okhotnikov

Galina Pashkova

Valya, music student

Nadezhda Ardi

Tonya, architecture student

Ivan Pereverzev

Physical education instructor (uncredited)

Tatyana Barysheva

Senya's mother (uncredited)

Vsevolod Sanayev

Red army sailor (uncredited)

Galina Stepanova

Young girl (uncredited)

Sergei Antimonov

Professor (uncredited)

Yeva Milyutina

Spectator at the concert (uncredited)

Maria Klyuchareva

Middle aged woman (uncredited)