the systematic study of the person of Mary, mother of Jesus, and of her place in the Economy of SalvationThe Oxford Dictionary of the Christian Church defines Mariology as "the systematic study of the person of the Blessed Virgin Mary and of her place in the economy of the Incarnation"Our Sunday Visitor's Catholic Encyclopedia (page 649) defines Mariology as "The study of the Blessed Virgin Mary in Christian theology, especially in the Catholic Church"Our Sunday Visitor's Encyclopedia of Saints page 917 defines Mariology as "Branch of theology that focuses on the Blessed Virgin.

Lutheran Mariology or Lutheran Marian theology is derived from Martin Luther's views of Mary, the mother of God and these positions have influenced those taught by the Lutheran Churches.