Caviano is a former municipality in the district of Locarno in the canton of Ticino in Switzerland.

On 25 April 2010, the former municipalities of Caviano, Contone , Gerra Gambarogno , Indemini , Magadino , Piazzogna , San Nazzaro, Sant'Abbondio and Vira Gambarogno merged in the new municipality of Gambarogno.

Caviano is first mentioned in 1258 as Caviliano.

In 1264 and again in 1365, the Bishop of Como transferred part of the tithes of the Gambarogno valley, including Caviano and Scaiano, to the Magoria and Duno families from Locarno. Caviano originally belonged to the parish of Locarno, then in 1558 to Sant'Abbondio. It became a separate parish in 1850.