Pomezia (Italian pronunciation: [poˈmɛttsja]) is a municipality (comune) in the Metropolitan City of Rome Capital, Lazio, central Italy.

The town was built entirely new near the location of ancient Lavinium on land resulting from the final reclamation of the Pontine Marshes under Benito Mussolini, being inaugurated on 29 October 1939.

After being occupied by the forces of the Third Reich, Pomezia was heavily bombed during the Battle of Anzio in World War II.

Pratica di Mare is the frazione of Pomezia where the ruins of the ancient port of Lavinium are located, now 6 kilometres (4 mi) from the Tyrrhenian Sea.

The oldest and the biggest football club in the comune is Pomezia Calcio, which plays in Lega Pro Seconda Divisione.