Monastère des Ursulines de Trois-Rivières, Historic convent in Trois-Rivières, Canada.

The Monastère des Ursulines de Trois-Rivières is a group of religious and institutional buildings erected between the 18th and 20th centuries at 734, rue des Ursulines, in the heart of Old Trois-Rivières. Construction began in 1699; the chapel and hospital were added in 1715, and the original walls survived fires in 1752 and 1806.

Founded in 1697 by Bishop Jean-Baptiste de La Croix de Chevrières de Saint-Vallier, this monastery operated continuously for over 320 years until the last Ursuline sisters departed in 2019.

The Ursulines arrived by brigantine on 10 October 1697: Marie Drouet de Jésus, Marie Le Vaillant de Sainte-Cécile and Françoise Gravel de Sainte-Anne, joined days later by two more sisters. They first taught Indigenous girls and daughters of families such as Hertel, Leneuf and Boucher, and ran a hospital for the poor and injured workers of the Forges du Saint-Maurice.

The monastery stands at 734 rue des Ursulines in Old Trois-Rivières. The Ursulines opened their archives to researchers in 1980, and the congregation transferred the building to the City of Trois-Rivières free of charge, a donation officially accepted in May 2022.

Despite surviving two major fires in 1752 and 1806, the original monastery walls remain intact, making it one of the oldest continuously preserved religious buildings in Quebec.