Pazhaya Suriyani Pally a.k.a. Old Syrian Church, Chengannur is an ancient Syrian Christian church of Kerala. It is governed by a joint commission of the Malankara Orthodox Syrian Church and the Mar Thoma Syrian Church. It is considered as one among the oldest still standing church buildings in Kerala and across India, that predates several centuries before the arrival of European Christianity in India. It is located at Chengannur, a major town along the MC Road, about 117 km north of the Kerala state capital Thiruvananthapuram and about 98 km south of Kochi. According to the verdict by the Madras High Court the governance of the church is conducted by both denominations who appoint trustees for the maintenance of the building.

Chengannur is a municipality and Town in Alappuzha district, Kerala, India. It is also the headquarters of the Chengannur Taluk. Chengannur is located in the south-eastern part of the district, in the region known as Odanad, along the banks of Pamba River. Chengannur is 36 kilometres (22 mi) southeast of the district headquarters Alappuzha and 117 kilometres (73 mi) north of the state capital Thiruvananthapuram. Both the NH 183 and Main Central Road pass through the town.