Needless to say, Mary, the Blessed Mother of Jesus, is so central in the mystery of salvation in Catholic Theology. Being Marian is being truly Catholic. Hence, this course proposes this module on Mariology; or the theological study about Mary and her role in the mystery of salvation. The module covers topics such as Mary in the Old Testament, Mary in the Synoptic Gospels, Mary in the Gospel of John and in the Book of Apocalypse, Mary in the writings of St. Paul and Patristic Theologians, The Divine Motherhood of the Blessed Virgin Mary, The Assumption of Mary, Virginity of the Blessed Mother, The Immaculate Conception of the Virgin Mary, Marian imprint in the Second Vatican Council in Lumen Gentium and Mary in the writings of Pope St. John Paul II.