The Théâtre de l'Île (Theatre of the Island) is a small municipally run theatre in Gatineau, Quebec. It is located on a small island at the southern end of the Ruisseau de la Brasserie, a small river running just to the west of Montcalm Street. The building was originally constructed in 1886 as the Hull Water Works, at a time when the site was at the heart of a largely industrial area. In the subsequent decades the building served a number of different purposes. In 1974 it suffered a devastating fire. The city of Hull and the National Capital Commission joined together to rebuild the structure as a theatre.