Inspired by his election to the Papacy on 19th.April 2005, I developed an interest to grow in a close relationship with love for the theology of liturgy by Pope Benedict XVI, the then Joseph Cardinal Ratzinger. Ratzinger is one of the known modern theologians of the Catholic Church with a strong sense of authenticity and a spirit of conserving the catholic faith with conviction. Looking at his writings, Pope Benedict XVI has not left aside the theme of the theology of liturgy showing how important the theology of liturgy is for him and for the Catholic Church as a whole. With this background, I confirmed my interest by choosing the topic: "The Theology of Liturgy by Pope Benedict XVI" for this work. With this topic and the interest I have to study the theology of liturgy as developed by Pope Benedict XVI, I hope to realize my objectives and aims of this study so that the readers of this work may be able to deepen their understanding of liturgy as an important and central aspect of the Christian life.