 Jean MaraisL'archiduc Rodolphe d'Autriche-Hongrie | L'archiduc Rodolphe d'Autriche-Hongrie |
 Dominique BlancharMarie Vetsera | Marie Vetsera |
 Claude FarellLa comtesse Marie Larisch | La comtesse Marie Larisch |
 Jean DebucourtL'empereur François-Joseph | L'empereur François-Joseph |
 Jean TouloutLe comte Taafe | Le comte Taafe |
 Silvia MonfortL'archiduchesse Stéphanie | L'archiduchesse Stéphanie |
 Jane MarkenLa baronne Hélène Vetsera | La baronne Hélène Vetsera |
 Jacques DacqmineL'Archiduc François-Ferdinand | L'Archiduc François-Ferdinand |
 Raphaël PatorniLe comte Hoyos | Le comte Hoyos |
| FFrançois RichardLe prince de Saxe-Cobourg | Le prince de Saxe-Cobourg |
 André CarnègeLe docteur | Le docteur |
 Charles LemontierLoschek | Loschek |
| JJean AyméLe nonce | Le nonce |
 Andrews EngelmannLe tueur | Le tueur |
| MMarie-LaurenceNot listed | Not listed |
 Denise BenoitAnna Vetsera | Anna Vetsera |
| MMarguerite JamoisL'impératrice Elisabeth | L'impératrice Elisabeth |
 Michel VitoldL'archiduc Jean-Salvator | L'archiduc Jean-Salvator |
 Guy HenryNot listed | Not listed |
| ÉÉtienne Aubray(uncredited) | (uncredited) |
 Claude Bertrand(uncredited) | (uncredited) |
| SSimone Barillier(uncredited) | (uncredited) |
| MMichèle Brabo(uncredited) | (uncredited) |
| CCélia Clairet(uncredited) | (uncredited) |
 Renée Cosima(uncredited) | (uncredited) |
 Madeleine FoujaneL'ambassadrice d'Allemagne (uncredited) | L'ambassadrice d'Allemagne (uncredited) |
| EEugène Frouhins(uncredited) | (uncredited) |
| TToni Grand(uncredited) | (uncredited) |
| LLucien Guervil(uncredited) | (uncredited) |
 Pierre JuvenetUn chirurgien (uncredited) | Un chirurgien (uncredited) |