Yan Yanakiyev

---

(Unknown)

Kapustin

Head of the Post Office

(Unknown)

(Unknown)

(Unknown)

Theorist Nikolay

(voice)

Гавриил Федосеевич Попков

(Unknown)

Буренин

Count de Berlaymont

Syroyezhkin

translator in the movie

Larrey (uncredited)

(Unknown)

Frits

Иван Гургенович

major (uncredited)

constructor

Sergei

member of a foreign delegation

Kobylyanskiy (as Ya. Yanakiyev)

Slava Advokatov

French ambassador (uncredited)

(Unknown)