The Cathedral of Our Lady of the Assumption (French: Cathédrale Notre-Dame de L'Assomption), often called Port-au-Prince Cathedral (French: Cathédrale de Port-au-Prince), was a cathedral in Port-au-Prince, Haiti. Built between 1884 and 1914, it was dedicated on December 13, 1928 (1928-12-13), and became the cathedral church of the Roman Catholic Archdiocese of Port-au-Prince.