St. Thomas Syro-Malabar Catholic Church, Palayur is located at Palayur (also spelt Palayoor), in Thrissur district in Kerala on the west coast of India. According to tradition, it was established in 52 AD by St Thomas, one of the twelve apostles of Jesus Christ. It is the oldest church in India and is called an Apostolic Church credited to the Apostolate of St. Thomas who preached and also started conversion of people to Christianity here. It was part of the seven churches that he established in India; the other six churches were established at Cranganore, Kokkamangalam, Kottakavu (North Paravur), Kollam, Niranam, and Chayal (Nilackal). The original small Church structure has been retained at the oldest site. But substantial improvements around it were carried out during the 17th century by Reverend Fenichi, as necessary, without sacrificing the main sanctity of the place.