Fort St. Louis

Fort St. Louis or Fort Saint Louis may refer to:

Canada

 * Fort Saint Louis (Newfoundland), Placentia, Newfoundland
 * Fort Saint Louis, a fort in what is now Moose Factory, Ontario
 * Fort St. Louis (Shelburne County, Nova Scotia)
 * Fort St. Louis (Guysborough County, Nova Scotia)
 * Fort St. Louis, former name of Fort Chambly, Chambly, Quebec
 * Fort St. Louis, alternate name of Fort de la Corne in Saskatchewan.

United States

 * Fort Saint Louis (Illinois), a French fort built by La Salle in 1683 and later known as Starved Rock
 * Fort Saint-Louis (Texas), a French colony from 1685 until 1688 near what is now Inez, Texas

Elsewhere

 * Fort Saint Louis (Martinique), a 17th-century French fortress in Fort-de-France, Martinique
 * Saint-Louis, Senegal, the French colonial capital in Senegal
 * Castle of San Luis de Bocachica, a 17th century Spanish fortress that defended Cartagena, Colombia