The Aiguillon (French pronunciation: [ɛɡɥijɔ̃] ⓘ) is a river in southern France, a tributary of the Cèze.

[1] The Aiguillon goes dry during the summer, but has carved out a rocky gorge called Les Concluses on the limestone plateau.

From a viewpoint high above, the gorge is riddled with deep geological structures known as marmites des géants (potholes).

In summer it is popular with walkers, who follow the water course under the steeply overhanging limestone valley sides.

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