The name Saint Louis has several referents:

• Catholic Saints
  • King Saint Louis IX of France;
  • Saint Louis, bishop of Toulouse in France
• Locations
  • Saint Louis, Missouri
  • St. Louis, Michigan
  • St. Louis, Oklahoma
  • Lac Saint-Louis in Quebec, Canada
  • Saint-Louis, Senegal, a city in Senegal
  • Saint-Louis Region of Senegal
  • Saint Louis Island , Senegal
  • Saint-Louis, Réunion is a city of Réunion
  • Saint-Louis, Guadeloupe is a city of Guadeloupe
  • Saint-Louis, Haut-Rhin is a commune in the Haut-Rhin département of France
  • Île Saint-Louis, an island on the Seine river, in Paris, France
• the loa in Vodun more commonly known as Dan Petro.

• The MS Saint Louis was also the name of a German ocean liner.