Alexandre Francois Auguste de Grasse, known as Auguste de Grasse and Comte de Grasse-Tilly (February 14, 1765 – June 10, 1845), was a French career army officer. He was assigned to the French colony of Saint-Domingue in 1789, where he married in Cap Français, and acquired a plantation and 200 slaves before the Haitian Revolution. Following the Royal Navy's defeat of the French fleet in Saint-Domingue in 1793, de Grasse was allowed to resign his commission and leave with his family and in-laws for Charleston, South Carolina.