The Piazza Arringo, also known as the piazza dell'Arengo, is the oldest monumental piazza in the city of Ascoli Piceno.
Rectangular in form, numerous important monuments face the piazza including: the palazzo Fonzi, the palazzo dell'Arengo from the 13th century the Bishop's residence, the Cathedral of Saint Emygdius, the baptistery of Saint John, the diocesan museum, and the palazzo Panichi.