Louis Marie Fouquet, Count of Gisors (27 March 1732 – 26 June 1758) was a French nobleman and soldier.

He was born in Metz, the only child of the Duke of Belle-Isle,[1] a distinguished general, and his second wife Marie Casimire de Béthune.

He was admitted to the Knights Hospitaller as a child, but never took his vows because of his age, so allowing him to marry later.

Louis Marie Fouquet de Belle-Isle was appointed governor of Metz and the country of Messin in 1756, after the death of his uncle.

Promoted to Mestre de camp, and then colonel, in 1758 Fouquet commanded the Royal-Carabiniers regiment at the battle of Krefeld, when he was mortally wounded during a charge.