The Chapel of Loreto is a 17th-century Roman Catholic church located on the Ilha dos Frades, in the Bay of All Saints, Brazil. The island is within the limits of the municipality of Salvador. It is dedicated to Our Lady of Loreto. The architect Mário Mendonça de Oliveira describes it as "a highly elegant building, with a sophisticated design and an attractive coastal setting on the Island of Frades." The building is protected as a historic structure by the state of Bahia.