Quiliano (Ligurian: Cuggen) is a comune (municipality) in the Province of Savona in the Italian region Liguria, located about 45 kilometres (28 mi) southwest of Genoa and about 5 kilometres (3 mi) west of Savona. As of 31 December 2004, it had a population of 7,225 and an area of 49.5 square kilometres (19.1 sq mi).
The municipality of Quiliano contains these frazioni (subdivisions, mainly villages and hamlets) : Cadibona, astride the watershed between the Alps and Apennines, Valleggia, Montagna, Roviasca, Faia and Tiassano.
In the environs of Quiliano remain several Roman archaeological sites: a Roman bridge still functions in the valley of Quazzola and remains of a Roman villa may be seen at San Pietro in Carpignano.