Casoria (Italian: [kaˈzɔːrja, -ˈsɔː-], Neapolitan: [kaˈsɔːrjə]) is a comune (municipality) in the Metropolitan City of Naples in the Italian region of Campania, located about 5 kilometres (3 miles) northeast of Naples.

Casoria borders the following municipalities: Afragola, Arzano, Cardito, Casalnuovo di Napoli, Casavatore, Frattamaggiore, Naples, Volla.

The village of Casoria developed after the year 1000 AD, thanks to the Benedictine monastery of San Gregorio Armeno of Naples.

In 1815 it was made capital of a circondario of the Kingdom of the Two Sicilies, including 19 communes.

Until the 1950s, Casoria was an agricultural center, also producing pasta and wine, as well as cannabis handicrafts.