Chirens is a commune in the Isère département in south-eastern France.
Above the hamlet of Clermont stands the Tour de Clermont, the only remains of the former castle of the Counts of Clermont-Tonnerre.
Isère (pronounced: [izɛːʁ]; Arpitan: Isera, Occitan: Isèra) is a department in the Rhône-Alpes region in the east of France named after the river Isère.