Colli Etruschi Viterbesi or Tuscia DOC is a denomination in the Lazio region of central west Italy. Tuscia refers to the when this area was a stronghold of the Etruscans.
Communes: The zone includes the municipalities of Acquapendente, Arlena di Castro, Bagnoregio, Barbarano Romano, Bassano in Teverina, Blera, Bolsena, Bomarzo, Canino, Capodimonte, Castiglione in Teverina, Celleno, Cellere, Civitella d’Agliano, Farnese, Gradoli, Graffignano, Grotte di Castro, Ischia di Castro, Latera, Lubriano, Marta, Montefiascone, Monte Romano, Onano, Oriolo Romano, Orte, Piansano, Proceno, San Lorenzo Nuovo, Tessennano, Tuscania, Valentano, Vejano, Vetralla, Villa San Giovanni in Tuscia, Viterbo and Vitorchiano in the province of Viterbo