St. Thomas Mount (known in Modern Tamil as Parangimalai) is a small hillock in Chennai, Tamil Nadu, India, near the neighbourhood of Guindy and very close to Chennai International Airport.

The ancient Syrian Christian community of India trace the origin of their church to St. Thomas the Apostle, believed to have been martyred in St. Thomas Mount. From the 17th century, this part of Chennai was populated predominantly by Anglo-Indians The St. Thomas Garrison Church is at the foot of St Thomas Mount. St. Thomas Syro Malabar Catholic Church is located east of the shrine at North Silver Street, foot holds of the mountain shrine.