The Syro-Malabar Catholic Church is a Chaldean Rite, Major Archiepiscopal Church in the Roman Catholic Church. It is the largest group among the Saint Thomas Christians. It originates from St. Thomas the Apostle who is believed to have come to India in AD 52. The Syro Malabar Church is the largest St. Thomas Christian community in India. They are also referred to as Syrian Catholics in Kerala. This church has its headquarters in Cochin, Kerala.