The Congregation of Mary Immaculate Queen is a sedevacantist Traditionalist Catholic religious congregation. The CMRI is dedicated to promoting the message of Our Lady of Fátima and the devotion of the practice of Total Consecration to the Virgin Mary as taught by Saint Louis Marie de Montfort.

Traditionalist Catholicism is a movement that emphasizes beliefs, practices, customs, traditions, liturgical forms, devotions and presentations of teaching associated with the Catholic Church before the Second Vatican Council (1962–1965). Traditionalist Catholics particularly emphasize the Tridentine Mass, the Roman Rite liturgy largely replaced in general use by the post-Second Vatican Council Mass of Paul VI.