St. Thomas Mount recognised in Modern Tamil as Parangimalai is a small hillock in Chennai, Tamil Nadu, India, near the neighbourhood of Guindy and very near Chennai International Airport. The historical Syrian Christian network of India trace the origin of their church to St. Thomas the Apostle. From the seventeenth century, this a part of Chennai become populated predominantly with the aid of Anglo-Indians. The St. Thomas Garrison Church is on the foot of St Thomas Mount. St. Thomas Syro Malabar Catholic Church is placed east of the shrine at North Silver Street, foot holds of the mountain shrine.
The neighbourhood is served by using the St. Thomas Mount railway station, on the southern line of the Chennai Suburban Railway Network. Integration of the Metro and MRTS with the suburban station inside the neighbourhood, is predicted to make the suburb the city's largest transit hub after Chennai Central. In the kingdom assembly elections of 1967 and 1971, there was a constituency called the Saint Thomas Mount.