| Cast list | | Lana Turner | as | Diane de Poitiers - Countess de Breze | | Pedro Armendáriz | as | King Francis I | | Roger Moore | as | Prince Henri | | Marisa Pavan | as | Catherine de Medici | | Cedric Hardwicke | as | Ruggieri | | Torin Thatcher | as | Louis - Count de Breze | | Taina Elg | as | Alys | | John Lupton | as | Regnault | | Henry Daniell | as | Gondi | | Ronald Green | as | The Dauphin | | Sean McClory | as | Count Michel Montgomery | | Geoffrey Toone | as | Duke of Savoy | | Michael Ansara | as | Count Ridolfi | | Paul Cavanagh | as | Lord Bonnivet | | Melville Cooper | as | 1st Court Physician |
| | Crew list: | | David Miller (Director) | | John Erskine (Writer) | | Christopher Isherwood (Writer) |
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