Tarquinia (Italian: [tarˈkwiːnja]), formerly known as Corneto, is an ancient city in the Province of Viterbo, Lazio, central Italy. It is renowned for its extensive Etruscan necropoleis, which contain some of the most important painted tombs of the ancient world. In recognition of its cultural significance, Tarquinia was designated a UNESCO World Heritage Site as part of the Etruscan Necropolises of Cerveteri and Tarquinia.
The modern town was renamed in 1922 after the ancient city of Tarquinii (Latin) or Tarch(u)na (Etruscan). Although little remains above ground of the once-flourishing city, archaeological excavations continue to uncover important remnants of its Etruscan and Roman past.