Fort Maurepas, French colonial fort near Biloxi Bay, United States

Fort Maurepas was a French colonial fort built in 1699 on the northeast shore of Biloxi Bay, in present-day Ocean Springs, Mississippi. Its four bastions were made of squared logs two to three feet thick, with embrasures for cannon; two bastions were stockaded with heavy timbers. A ditch surrounded the fort, and twelve guns were mounted. A reconstruction with palisade logs and a cannon stands behind a green sign.

Fort Maurepas was completed on May 1, 1699 under Pierre Le Moyne d'Iberville, who sailed for France on May 4, leaving Sauvolle de la Villantry as governor and his teenage brother Bienville second in command. About 100 men stayed, including 13 Canadians and 6 masons. The fort served as Louisiana's capital until it moved to Mobile in 1710, then to New Orleans in 1723.

French settlers lived closely with local tribes and learned their languages to build lasting relationships. This shaped how Europeans and indigenous people first interacted in the region.

The site is accessible as a park on Front Beach Drive in Ocean Springs along the waterfront. Visitors can enjoy a pavilion, fishing pier, and other recreational facilities on the grounds.

The Iberville stone, carved in April 1699 to claim the site for France, is now held by the Louisiana State Museum. The fort's name honoured Louis Phélypeaux, comte de Maurepas, though English maps of around 1710–1725 labelled it "Fort Bilocci" after the local Native American tribe.