Malankara Mar Thoma Syrian Church, otherwise called as Mar Thoma Church in a shorter form, which is a part of the One Holy Catholic and Apostolic Church, is one of the ancient Churches in the world. It is traditionally believed that St. Thomas (Mar Thoma in Syriac), the disciple of Jesus Christ came to India in AD 52 and established the Church in the Malabar coast. Kerala is known as Malankara in those times. Being rooted in the Bible, the Church maintains its Episcopal heritage and value oriented democratic form of administration.

The Church is blessed and enriched by the leadership of the Metropolitan, Bishops, ordained Clergy and deacons. Metropolitan is the Supreme head of the Church. The Laity has full participation in the Priestly ministry, given through the Church, by Christ. They are called to profess and practice Christian truths and teachings in their daily life and avocations. The laity shall take active part in the life and ministry of the Church and co-operate in the general administration of the Church.

The Church is at present blessed by the able leadership of ten Bishops and is headed by Most Rev. Dr. Theodosius Mar Thoma Metropolitan who is the 22nd Malankara Metropolitan to occupy the Holy Apostolic Throne of St. Thomas. The Church is served by 1184 clergy through thirteen dioceses to 1.6 million people (aprox). The headquarters is located at SCS Campus, Thiruvalla, Kerala, India and has over a million adherents spread worldwide.