Roman Catholic devotions are "external practices of piety" that are not part of the official liturgy of the Catholic Church but are part of the popular spiritual practices of Catholics. Catholic devotions do not become part of liturgical worship, even if they are performed within a Catholic church, in a group, or in the presence of a priest. The Congregation for Divine Worship at the Vatican publishes a Directory on Popular Piety and the Liturgy.

Devotion to saints, with the Virgin Mary as the most prominent example, is a key characteristic of Roman Catholicism. Catholic devotions have various forms, ranging from formalized, multi-day prayers such as novenas to activities that do not involve any prayers, such as Eucharistic adoration outside Mass, the wearing of scapulars, the veneration of the saints, and even horticultural practices such as maintaining a Mary garden.

Common examples of Catholic devotions include the  Rosary, the  Stations of the Cross, the  Sacred Heart of Jesus, the  Holy Face of Jesus, the various scapulars, the  Immaculate Heart of Mary,  Our Lady of Guadalupe,  Seven Sorrows of Mary, novenas to various saints,  pilgrimages and devotions to the  Blessed Sacrament, and the veneration of saintly images.