List of metropolitan areas in Tamil Nadu

This is a list of metropolitan areas by population in the Indian state of Tamil Nadu. As per the Constitution of India, a metropolitan area is defined as an area having a population of 10 lakh or more, comprised in one or more districts, and consisting of two or more municipalities or panchayats or other contiguous areas, specified by the Governor by a public notification. Chennai is the capital and the largest metropolitan area in Tamil Nadu.

List
The list is updated for cities wherever metropolitan area data is available with the corresponding sources. All population data correspond to the 2011 census. For regions that were expanded post-2011 and no updated population data is available, data corresponding to the old urban area limits as per the 2011 census has been considered.