Civitavecchia is a comune (municipality) in the Metropolitan City of Rome Capital, in the Italian region of Lazio. A sea port on the Tyrrhenian Sea, it is located 60 kilometres west-north-west of Rome. The harbour is formed by two piers and a breakwater, on which stands a lighthouse.

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.