The Théâtre du Châtelet () is a theatre and opera house in Paris seating 2,500 people. It was designed by Gabriel Davioud. It was built between 1860 and 1862. It was named the "Théâtre Impérial du Châtelet". It was built on a site where a châtelet (small castle) once stood. The theatre has undergone remodeling and name changes over the years. The theatre sits on the Place du Châtelet facing the Théâtre de la Ville. At the centre of the plaza is a fountain is a sphinx fountain, erected in 1808, which celebrates Napoleon's victory in Egypt.