Terzigno is a comune in the Metropolitan City of Naples in the Italian region Campania, located about 20 km east of Naples. As of 31 December 2004, it had a population of 16,977 and an area of 23.5 km2. The municipality of Terzigno contains the frazione Boccia al Mauro. Terzigno borders the following municipalities: Boscoreale, Boscotrecase, Ottaviano, Poggiomarino, San Giuseppe Vesuviano.