Cluviae, Archaeological site in Casoli, Italy

Cluviae is a Roman municipium site near Piano Laroma in Casoli, with a circuit of walls about 1,560 m long enclosing an area 680 m across. Excavations from 1966 onward exposed a theatre, baths behind its cavea, paved streets and sewers; the walls use opus reticulatum and opus incertum. Five gates opened the circuit, and two partly survive with square towers facing the Avello river.

Livy records that in 311 BC the Romans sent troops under consul Gaius Junius Bubulcus Brutus to prevent the Etruscans from joining the Samnites near Cluviae. The town, built on the site of a fortified indigenous village, became a Roman municipium whose urban development dates from the 1st century BC to the mid-1st century AD. After Byzantine and Saracen incursions in the 8th–9th centuries, it was abandoned and buried by landslides.

The name Cluviae survives in the bronze tablet of 384 AD, drawn up on behalf of the Cluvinses Carricini and found at Bufalara in the territory of San Salvo. Local tradition, reported by De Petra, links the site's toponyms to Rome: the area was called Roma and the stream that runs through it Aventino, after the Roman hill. The finds, from the Julio-Claudian portrait head to the mosaics and capitals, are kept at the national archaeological museum in Chieti.

The ruins lie in the Piano Laroma district of Casoli, province of Chieti, on ground that has slipped and been buried by landslides over the centuries. The perimeter walls, the theatre on the eastern side and the five gateways, two of which keep their square towers facing the Avello river, are read best on foot along the surviving wall lines. Parts of the theatre are covered by recent houses, so the plan is clearer than the masonry.

A tablet from 384 AD found here documents political relationships between this town and its neighboring communities. This record offers rare insight into how towns made agreements with one another during that era.