A rochet is a white vestment generally worn by a Roman Catholic or Anglican bishop in choir dress. It is unknown in the Eastern churches. The rochet in its Roman form is similar to a surplice, except that the sleeves are narrower. In its Anglican form it is a descendant of the traditional albs worn by deacons and priests. In the Roman Catholic tradition, the rochet comes below the knee and its sleeves and hem are sometimes made of lace; in the Anglican tradition, the rochet comes down almost to the hem of the cassock and its sleeves are gathered at the wrist.

Vestments are liturgical garments and articles associated primarily with the Christian religion, especially by Eastern Churches, Catholics, Lutherans, and Anglicans. Many other groups also make use of liturgical garments; among the Reformed (Calvinist) Churches this was a point of controversy in the Protestant Reformation and sometimes since, in particular during the ritualist controversies in the Church of England in the 19th century.