The Roman Ruins of São Cucufate (or alternately, the Roman Ruins of the Villa of São Cucufate, Ruins of Santiago, Archaeological Ruins of São Cucufate or Roman villa of São Áulica) is a Romanesque archaeological site, located on the ruins of a Roman-era agricultural farm in the civil parish of Vila de Frades, in the municipality of Vidigueira, in the southern Alentejo, Portugal.