Beatrice de Montfort | |
|---|---|
| suo jure Countess of Montfort-l'Amaury Countess of Dreux Countess of Braine | |
 | |
| Born | December 1248 – December 1249 France |
| Died | 9 March 1312 |
| Noble family | House of Montfort |
| Spouse(s) | Robert IV, Count of Dreux, Braine and Montfort-l'Amaury |
| Issue | Marie of Dreux Yolande of Dreux, Queen of Scotland John II, Count of Dreux and Braine Jeanne of Dreux, Countess of Braine Beatrice of Dreux, Abbess of Port-Royal Robert of Dreux, Seigneur of Chateau-du-Loire |
| Father | John I of Montfort |
| Mother | Jeanne, Dame de Chateaudun |
Beatrice de Montfort, Countess of Montfort-l'Amaury (December 1249 – 9 March 1312) was a ruling sovereign countess of Montfort from 1249 until 1312. She was also countess of Dreux by marriage to Robert IV, Count of Dreux. She was the ancestor of the Dukes of Brittany from the House of Montfort-Dreux which derived its name from her title.