| Armand de Gramont | |
|---|---|
| Duke of Gramont Duke of Guiche, Prince of Bidache | |
 Photograph of the Duke, by Paul Nadar, 1900 | |
| Born | Armand Antoine Agénor de Gramont 29 September 1879 Paris |
| Died | 2 August 1962 (aged 82) Château de Vallière, Mortefontaine |
| Spouse | |
| Issue | Henri de Gramont, 13th Duke of Gramont Count Henri Armand de Gramont Count Jean de Gramont Count Charles de Gramont Baroness Philipp von Günzburg |
| House | Gramont |
| Father | Agénor de Gramont, 11th Duke of Gramont |
| Mother | Marguerite de Rothschild |
Armand Antoine Agénor de Gramont, 12th Duke of Gramont (29 September 1879 – 2 August 1962) was a French nobleman, scientist and industrialist. He was known by the courtesy title of Duke of Guiche until 1925, when he succeeded his father as Duc de Gramont.