Alès is a commune in the Gard department in the Occitainie region in southern France. It is one of the sub-prefectures of the department. It was formerly known as Alais.

Alès lies 40 kilometres (25 miles) north-northwest of Nîmes, on the left bank of the Gardon River, which half surrounds it. It is located at the foot of the Cévennes, near the Cévennes National Park.

The streets are wide and its promenades and fine plane-trees make the town attractive; but the public buildings, the chief of which are the Saint-Jean-Baptiste cathedral, a heavy building of the 18th century, and the citadel, which serves as barracks and prison, are of small interest.