Saint-Loup (Saint Lupus) is the name or part of the name of several communes in France:
- Saint-Loup, Allier, in the Allier département
- Saint-Loup, Charente-Maritime, in the Charente-Maritime département
- Saint-Loup, Creuse, in the Creuse département
- Saint-Loup, Jura, in the Jura département
- Saint-Loup, Loir-et-Cher, in the Loir-et-Cher département
- Saint-Loup, Manche, in the Manche département
- Saint-Loup, Marne, in the Marne département
- Saint-Loup, Nièvre, in the Nièvre département
- Saint-Loup, Rhône, in the Rhône département
- Saint-Loup, Tarn-et-Garonne, in the Tarn-et-Garonne département
- Saint-Loup-Cammas, in the Haute-Garonne département
- Saint-Loup-de-Buffigny, in the Aube département
- Saint-Loup-de-Fribois, in the Calvados département
- Saint-Loup-de-Gonois, in the Loiret département
- Saint-Loup-de-Naud, in the Seine-et-Marne département
- Saint-Loup-des-Chaumes, in the Cher département
- Saint-Loup-des-Vignes, in the Loiret département
- Saint-Loup-de-Varennes, in the Saône-et-Loire département
- Saint-Loup-d'Ordon, in the Yonne département
- Saint-Loup-du-Dorat, in the Mayenne département
- Saint-Loup-du-Gast, in the Mayenne département
- Saint-Loup-en-Champagne, in the Ardennes département
- Saint-Loup-en-Comminges, in the Haute-Garonne département
- Saint-Loup-Géanges, in the Saône-et-Loire département
- Saint-Loup-Hors, in the Calvados département
- Saint-Loup-Lamairé, in the Deux-Sèvres département
- Saint-Loup-Nantouard, in the Haute-Saône département
- Saint-Loup-sur-Aujon, in the Haute-Marne département
- Saint-Loup-sur-Semouse, in the Haute-Saône département
- Saint-Loup-Terrier, in the Ardennes département
The name was also the pseudonym of the writer Marc Augier.