The Metropolitan Cathedral of Quito (), known simply as la Catedral, is the Catholic cathedral in Quito, Ecuador. Located on the southwest side of the Plaza de la Independencia (La Plaza Grande), it (and its older building) served as a seat of the Diocese of Quito from 1545 until 1848 when it became the Archdiocese. In 1995, it became the the Cathedral of Ecuador, making it the oldest Catholic church in the country.