Louis de Tousard (1749–1817) was a French artillerist who served in the American Continental Army under La Fayette, and later was given a US commission. Tousard wrote two very influential books: one was a proposal for a school for officers that became the blueprint for West Point, and the other was a manual for artillery officers that became standard in the young army.

Antoine Étienne de Tousard was a French general and military engineer during the French Revolutionary and Napoleonic Wars. He was also the last military engineer of the Order of Saint John. He is the brother of Louis de Tousard.