On 14 May 1612, Claudio Acquaviva, Superior General of the Society of Jesus, raised the college of Sassari to the status of a University of Ecclesiastic Law in order to confer the academic grades in Philosophy and Theology.
With the Papal Brief Innumera splendidaque by 1 December 1876, Pope Pius IX founded the theological colleges within the seminars of Cagliari and Sassari, authorizing them to release the academic grades of Baccalaureate, Licence and Doctorate.
With the Apostolic Constitution Nostrarum partem of 5 August 1927, Pope Pius XI founded in Cuglieri – along with the Pontifical Major Seminary accorded to the Society of Jesus – the two Faculties of Theology and Philosophy which were supposed to extend the activity already started in the Universities of Cagliari and Sassari.
In the academic year 1972-1973, the Congregation for Catholic Education entrusted the Sardinian Episcopal Conference with the running of the Faculty.
On 12 March 1999, the Faculty of Theology was enrolled in the Register for Legal Personalities within the Law Court of Cagliari.
The Faculty publishes the annual journal Theologica & Historica and a number of academic book series such as Studi e Ricerche di Cultura Religiosa, Limine (Dept.