| Cast overview, first billed only: |
 | Nikolay Rybnikov | - | Semyon Vostrikov |
 | Vyacheslav Tikhonov | - | Sergei Nashchokin |
 | Ella Nechayeva | - | Nyusha |
 | Lev Polyakov | - | Nikolay Ignatyev (as L. Polyakov) |
 | Stanislav Chekan | - | Petrenko (as S. Chekan) |
 | Vladimir Druzhnikov | - | Kirill Borozdin (as V. Druzhnikov) |
 | Lev Sverdlin | - | professor Borozdin (as L. Sverdlin) |
 | Olga Zhizneva | - | Borozdina (as O. Zhizneva) |
 | Alla Larionova | - | Nina (as A. Larionova) |
 | Margarita Volodina | - | Irina (as M. Volodina) |
 | Georgiy Yumatov | - | Graf (as G. Yumatov) |
| Grigori Kirillov | - | baron Unger (as G. Kirillov) |
 | Vera Shershnyova | - | Khozyaika 'Rusalka' (as V. Shershneva) |
 | Lyudmila Chursina | | |
| Yelena Gogoleva | - | knaginya Nashchekina (as Xe. Gogolyeva) |
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