Thrikkunnathu St. Mary's Orthodox Syrian Church, is a church that is part of the Angamaly Diocese of the Malankara Orthodox Syrian Church. The church belongs to Thrikkunnathu Seminary, the headquarters of the Angamaly Diocese. It is located near the town of Aluva, in the Ernakulam district of Kerala.
The Seminary was closed for 40 years due to factional authority disputes between the Jacobite Society and the Malankara Orthodox Syrian Church. Following a Supreme Court verdict, the Seminary is controlled and administered by the Malankara Orthodox Syrian Church.
In 1880 the Malankara Syrian Church acquired of land for construction of the church and a cornerstone was laid in 1889. The church began as a small building thatched with coconut leaves in the early 1900s. Paulose Mar Athanasius built the current St Mary's Church in the early 1930s. The western side of the building was extended in 1964. Patriarchs of Antioch, Ignatius Abded Aloho II, St.Ignatius Elias III and Ignatius Jacob III had visited this church in 1911, 1931 and 1964.