Leonardo da Vinci–Rome Fiumicino Airport (Italian: Aeroporto Leonardo da Vinci di Roma–Fiumicino) (IATA: FCO, ICAO: LIRF) is an international airport in Fiumicino, Italy, serving Rome. It is the busiest airport in the country, the 9th busiest airport in Europe and the world's 46th-busiest airport with over 40.5 million passengers served in 2023. It covers an area of 16 square kilometres (6.2 sq mi).

Rome-Fiumicino Airport "Leonardo da Vinci" serves as the principal hub for ITA Airways, the Italian flag carrier and the largest airline in the country. It was previously the hub of Alitalia, the defunct Italian flag carrier. It is also an operating basefor several other airlines, such as Neos, AeroItalia, Ryanair, Vueling and Wizz Air.

Opened in 1961, it is in Fiumicino, 30 kilometres (19 mi) south of Rome, and is named for Italian polymath Leonardo da Vinci (1452–1519). Reproductions of some of his most famous works and inventions are on display inside the airport.

As of 2022, it has won the "Best Airport Award" in the category of hubs with over 40 million passengers, issued by Airports Council International (ACI) Europe, for three years in a row.