The Église Notre-Dame de l'Assomption (Our Lady of the Assumption Church) is a Roman Catholic parish church of the town of Rouffach in southern Alsace. It is one of the largest medieval churches in the Haut-Rhin département of France. The church is also known as Saint-Arbogast Church (Église Saint-Arbogast).It lies on the "Route Romane d'Alsace". Although work started in the 11th century and was carried on with interruptions until 1870, the building remains unfinished.