| Antoine Charles de Gramont | |
| 3rd Duke of Gramont | |
| Spouse: | Marie Charlotte de Castelnau Anne Baillet de La Cour |
| Issue: | Catherine-Charlotte de Boufflers |
| Mother: | Françoise Marguerite du Plessis |
| Birth Date: | 1641 |
| Death Date: | 25 October 1720 (aged 79) |
| Full Name: | Antoine Charles |
Antoine Charles de Gramont, 3rd Duke of Gramont (1641 - 25 October 1720) was a French nobleman comte de Guiche, comte de Louvigny, Souverain de Bidachewho served as a diplomat. His senior title was Duke of Gramont.
He was the youngest son of Antoine III de Gramont and Françoise-Marguerite du Plessis de Chivré (d. 2 May 1689), Cardinal Richelieu's niece.
He distinguished himself in the King's armies during the campaign against Holland in 1672 and during the Siege of Besançon (1674) in the Franco-Dutch War.Later he was Ambassador extraordinary in Spain, Viceroy of Navarre and Béarn, and governor of Bayonne.
He was a Knight of the King's order and Knight of the Golden Fleece.
In 1668 he married Marie Charlotte de Castelnau (1648 – 29 January 1694), daughter of Marshal Castelnau.
They had two children :
After his wife died, he married Anne Baillet de La Cour (1665-1737) in 1710.They had one child: