Hôtel le Tonnelier de Breteuil, Listed private mansion in 3rd district of Paris, France

Hôtel le Tonnelier de Breteuil is an 18th-century private mansion in Paris's 3rd district featuring a restrained facade with a carriage entrance ornated by a carved mask. The inner courtyard is symmetrically designed and displays the standard layout typical of aristocratic residences of that era.

A first mansion was built around 1550 for Claude de Bérulle, president at the Parlement. In 1626 it was awarded to Claude Le Tonnelier de Breteuil, prosecutor general at the Cour des aides; his son Louis bought the neighbouring house at No. 56 in 1660. In 1735 the house passed to the children of Claude-Charles Le Tonnelier, and in 1738 the architect Jean Aubry added a courtyard wing and the street carriage door with its carved mask. The State acquired it in 1862 for the Archives, and the École des Chartes occupied it until 1897.

The inner courtyard is known as the "cour de l'école des Chartes", recalling the École nationale des chartes, which occupied the building from 1862 until its transfer to the new Sorbonne in 1897. The mansion's name comes from Claude Le Tonnelier de Breteuil, procureur général at the Cour des aides, to whom it was awarded in 1626.

The mansion stands at 58 rue des Francs-Bourgeois, in the 3rd arrondissement, a short walk from the Carnavalet Museum and Place des Vosges. The State bought it in 1862 for the Archives; it housed the École des Chartes until 1897. It is not open to visitors, but the street door with its carved mascaron and the courtyard wing by Jean Aubry can be seen from the street.

In 1738, architect Jean Aubry added a new wing facing the courtyard that modified the original arrangement of the house. This addition reveals how such residences were continuously adapted to suit the changing needs of their occupants.