| Diana of Foix | |
| Native Name: | Charlotte Diane de Foix-Candale |
| Native Name Lang: | French |
| Birth Date: | after 1540 |
| Death Date: | 24 May 1587 |
| Countess of Gurson | |
| Spouse: | Louis de Foix |
Charlotte Diane de Foix-Candale (after 1540 – 24 May 1587) became the Comtesse of Gurson (in France) after her marriage in 1579 with Louis de Foix, who fell in the Battle of Montraveau on 29 July 1587. Michel de Montaigne dedicated the twenty-sixth of his Essais ("On the Education of Children") to her.