The Roman Catholic Archdiocese of Saint-Boniface is a Latin archdiocese in part of the civil Province of Manitoba in Canada. Despite having no suffragan dioceses, the archdiocese is nominally metropolitan and is an ecclesiastical province by itself. It is currently led by Archbishop Albert LeGatt.

Saint Boniface Cathedral is a Roman Catholic cathedral of Saint Boniface, Winnipeg, Manitoba, Canada. It is an important building in Winnipeg, and is the principal church in the Roman Catholic Archdiocese of Saint Boniface, serving the eastern part of Manitoba province as well as the local Franco-Manitoban community. The church sits in the centre of the city at 190 avenue de la Cathédrale, Saint Boniface. Before the fire on July 22, 1968, which destroyed the previous building on site, the church was a minor basilica.