Paurastya Vidyāpīṭham or the Pontifical Oriental Institute of Religious Studies is an autonomous faculty of Theology erected at the St. Thomas Apostolic Seminary, Vadavathoor, Kottayam. 

By a decree of the Congregation for Catholic Education Prot. No.674/72/13, the Theological Department of the seminary was affiliated to the Faculty of Oriental Ecclesiastical Sciences at the Pontifical Oriental Institute in Rome on the February 21, 1973. After an experimental period of four years, the affiliation was renewed and extended by the letter of the Congregation for Catholic Education, dated April 10, 1977. Then realizing the important role of this seminary in the life of the Oriental Churches of India and taking into account its steady growth in the past years the Congregation for Catholic Education raised its academic section into an independent Theological Faculty, with the name Paurastya Vidyāpīṭham (PVP), with the right to confer the degrees of B.Th. (Bachelor of Theology), M.Th. (Master of Theology) and D.Th. (Doctor of Theology) through the decree Perinsigne Fidei Christianae Testimonium on July 3, 1982, the Feast of St. Thomas, the Apostle of India.

On August 15, 1985, the Department of Philosophy was given the power to confer the degree of B.Ph. (Bachelor of Philosophy). The PVP was authorized officially to commence the Doctoral Course in Theology by the letter of the Congregation for Catholic Education dated November 28, 1986. The Institute of Eastern Canon Law at PVP aggregated to the Pontifical Oriental Institute, Rome was erected on December 12, 2016 and was formally inaugurated on August 27, 2017.