Chennai International Airport (IATA: MAA, ICAO: VOMM) is an international airport serving the city of Chennai, the capital of Tamil Nadu, India. It is located in Tirusulam in Chengalpattu district, in the Greater Chennai Metropolitan Area around 21 km (13 mi) southwest of the city centre. The first air service was operated in 1915 and the airport was commissioned in 1930. The airport serves as the southern regional headquarters of the Airports Authority of India (AAI) for South India comprising the states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, Telangana, and the union territories of Lakshadweep, and Puducherry.

The airport is the fifth-busiest airport by passenger traffic and aircraft movements, and fourth busiest by cargo handled in India and international traffic. In financial year 2023–24, the airport handled over 21 million passengers and 0.34 million tonnes of cargo. The airport offers connecting passenger flights to all six inhabited continents, and direct flights to three of them.

As of 2024, the airport has three operating passenger terminals with terminals 1 and 4 handling domestic traffic and terminal 2 handling international operations respectively. Expansion of terminal 2 replacing the older terminal 3 and a new satellite terminal, are under construction. There is a dedicated air cargo complex operating out of the old passenger terminal at Meenambakkam.