Moleno is a former municipality in the district of Bellinzona in the canton of Ticino in Switzerland .

On 2 April 2017 the former municipalities of Camorino , Claro, Giubiasco , Gnosca , Gorduno , Gudo , Monte Carasso , Pianezzo , Preonzo , Sant'Antonio and Sementina merged into the municipality of Bellinzona.

Moleno is first mentioned in 1213, though this comes from a copy from 1588. In 1256 it was mentioned as a Rivo de Moline. During the Middle Ages, the water running from the Moleno valley formed the southern boundary of the Levantine valley. In 1335, it became part of the County of Bellinzona.