The Petit Luxembourg is a French hôtel particulier and the residence of the president of the French Senate. It is located at 17–17 bis, rue de Vaugirard, just west of the Luxembourg Palace, which serves as the seat of the Senate, in the 6th arrondissement of Paris. Originally built around 1550 to the designs of an unknown architect, it is especially noted for the surviving Rococo interiors designed in 1710–1713 by the French architect Germain Boffrand. Further west, at 19 rue de Vaugirard, is the Musée du Luxembourg.

The Luxembourg Palace is at 15 Rue de Vaugirard in the 6th arrondissement of Paris, France. It was originally built (1615–1645) to the designs of the French architect Salomon de Brosse to be the royal residence of the regent Marie de' Medici, mother of King Louis XIII. After the Revolution it was refashioned (1799–1805) by Jean Chalgrin into a legislative building and subsequently greatly enlarged and remodeled (1835–1856) by Alphonse de Gisors. The palace has been the seat of the upper houses of the various French national legislatures since the establishment of the Sénat conservateur during the Consulate; as such, it has been home to the Senate of the Fifth Republic since its establishment in 1958.