Claro is a former municipality in the district of Riviera in the canton of Ticino in Switzerland. On 2 April 2017 the former municipalities of Camorino, Giubiasco, Gnosca, Gorduno, Gudo, Moleno, Monte Carasso, Pianezzo, Preonzo, Sant'Antonio and Sementina merged into the municipality of Bellinzona.