Gambarogno is a municipality in the district of Locarno in the canton of Ticino in Switzerland. It was created on 25 April 2010 through the merger of the municipalities of Caviano , Contone , Gerra, Indemini , Magadino , Piazzogna , San Nazzaro, Sant'Abbondio and Vira.

Gambarogno borders the following municipalities: Alto Malcantone , Ascona , Curiglia con Monteviasco (IT-VA), Locarno, Minusio , Monteceneri , Tenero-Contra, Maccagno con Pino e Veddasca (IT-VA).

Caviano is first mentioned in 1258 as Caviliano. Contone is first mentioned in 1152 as Gondono. The name Gerra is probably from the 18th century, when the village of Ronco de Martignoni (which was first mentioned in 1591) expanded into the Gerra river delta and the shores of Lake Maggiore .