Baselios Thomas I (born 22 July 1929) is a Syriac Orthodox Catholicos of India (Maphrian) and regional head of the Jacobite Syrian Christian Church, the Syriac Orthodox Church in India. He was enthroned on 26 July 2002 by Syriac Orthodox Patriarch Ignatius Zakka I Iwas, Patriarch of Antioch and All the East in a ceremony held in Damascus, Syria. The office of the Maphrian had been vacant from 1996 (date of death of Baselios Paulose II Catholicos) to 2002.[1]