Hôtel de Jassaud, Private mansion on Île Saint-Louis, Paris, France.

Hôtel de Jassaud is a 1642 private mansion on Île Saint-Louis, with two addresses: 19 quai de Bourbon (Grand hôtel) and 26 rue Le Regrattier (Petit hôtel). The quai facade has a central arched doorway with a double black door, a stone plaque numbered 19 above it, and tall windows with white louvered shutters; an iron balcony with scrolling ornament runs above the ground floor. The building also has a small garden and a second courtyard.

The mansion was built during the 1640s development of Île Saint-Louis, which transformed the island into a prestigious residential quarter for Paris aristocracy. Its roof and riverside facade received official historical protection in 1993.

The building is known as much for its residents as its architecture: sculptor Camille Claudel worked in a ground-floor studio here from 1899 to 1913. The engraver Félix Buhot, a friend of painter Norbert Gœneutte, also lived here, and Gœneutte painted family portraits in the house. The address covers two parts, the Grand hôtel at 19 quai de Bourbon and the Petit hôtel at 26 rue Le Regrattier.

The location sits on an island in central Paris, accessible by foot via several bridges from the riverbanks. A riverside walk provides the best view of the exterior since it remains a private residence not open to visitors.

The building carries two addresses: the Grand hôtel de Jassaud at 19 quai de Bourbon and the Petit hôtel de Jassaud at 26 rue Le Regrattier. The quai facade and its matching roof section were classified in 1993, five years after the rest of the building was inscribed in 1988.