| Quarto | |
| Coordinates: | 40.8778°N 14.1403°W |
| Region: | Campania |
| Metropolitan City: | Naples (NA) |
| Mayor: | Antonio Sabino |
| Area Total Km2: | 14.16 |
| Population Footnotes: | [1] |
| Population Total: | 41069 |
| Population As Of: | 1 January 2017 |
| Population Demonym: | Quartesi |
| Elevation M: | 142 |
| Saint: | Santa Maria |
| Day: | 12 September |
| Postal Code: | 80010 |
| Area Code: | 081 |
Quarto is a comune (municipality) in the Metropolitan City of Naples in the Italian region Campania, located about 11 km northwest of Naples.
Quarto borders the following municipalities: Giugliano in Campania, Marano di Napoli, Naples, Pozzuoli, Villaricca. The local football club for the comune is A.S.D. Quarto.