Imam Khomeini International Airport (IATA: IKA, ICAO: OIIE) (Persian: فرودگاه بین‌المللی امام خمینی) is the international airport of Tehran, the capital of Iran. It is located 2 kilometers (1 mi) of Vahnabad and 35 kilometres (22 mi) southwest of Tehran and is named for Ruhollah Khomeini, Iran's first supreme leader. The airport is operated by Imam Khomeini Airport City Company. It covers 13,400 hectares (33,000 acres) and has two terminals and two runways. All international flights into Tehran are served by the airport, and all domestic flights land at Mehrabad Airport. Imam Khomeini Airport is a hub for four airlines. As of the fiscal year ending on 20 March 2019, it ranks third in terms of passenger traffic in Iran.

The airport was conceived before the 1979 revolution, as Mehrabad Airport was becoming congested. It was scheduled to open in May 2004 under the management of Tepe-Akfen-Vie (TAV), a Turkish-Austrian consortium. However, the Islamic Revolutionary Guard Corps shut it down soon after the first plane landed, citing security fears over allowing foreigners to run the airport.