Jean-Bretagne-Charles de La Trémoille (February 5, 1737–May 19, 1792), 7th duc de Thouars, was a French soldier and the son of Charles Armand René de La Trémoille and his wife, Marie Hortense de La Tour d'Auvergne.
La Trémoille began his military career in the Seven Years' War as the head of the regiment of Aquitaine-Cavalry. He was seriously wounded and afterwards promoted to the rank of sergeant, and later of brigadier, of the armies of the king.
During the French Revolution, La Trémoille remained faithful to King Louis XVI. He emigrated in 1789, but two of his sons died in the Reign of Terror.
La Trémoille married Marie-Genevieve de Durfort (1735-1762), the daughter of Guy-Michel de Durfort, Duc of Lorges and Randan, Marshal of France, and Élisabeth Philippine of Poitiers de Rye, Comtesse of Neufchatel, on February 18, 1751. They did not have children. On June 27, 1763, he married again to Marie-Maximilienne, princess of Salm-Kyrburg (1744-1790) the daughter of Philip Joseph, Prince of Salm-Kyrburg and Maria Theresia von Hornes.
From his second marriage, the La Trémoille had four sons: