The Indian Orthodox Church, also known as the Malankara Orthodox Syrian Church, is one of the ancient Christian denominations in India. It traces its roots back to the arrival of St. Thomas the Apostle in the 1st century AD. The church follows the Eastern Orthodox tradition and has a rich liturgical heritage, using the Syriac language in its services. The church is primarily located in the state of Kerala and has a significant presence in other parts of India and abroad. It emphasizes the importance of the Holy Scriptures, the sacraments, and the teachings of the early church fathers. The Indian Orthodox Church is known for its vibrant community life and commitment to social service.