The Order of (abbreviation: OAD) a mendicant order that branched off from the Order of Saint Augustine as a reform movement.

The Secular Order of Discalced Carmelites (abbreviated OCDS), formerly the Secular Order of Discalced Carmelites of the Blessed Virgin Mary of Mount Carmel and of the Holy Mother Saint Teresa of Jesus, is a third order of Catholic lay persons and secular clergy associated with the Discalced Carmelites.