Ciampino is a city and comune in the Metropolitan City of Rome, Lazio, Italy. It was a frazione of Marino until 1974, when it became a comune; it obtained the city status in 2004 by a presidential decree.

Metropolitan City of Rome Capital is an area of local government at the level of metropolitan city in the Lazio region of Italy. It comprises the territory of the city of Rome and 120 other comuni in the hinterland of the city. With more than 4.3 million inhabitants, it is the largest metropolitan city in Italy.