The Corsiglièse is a stream in the department of Haute-Corse, Corsica, France.

[1] The stream rises to the south of the village of Sant'Andréa-di-Bozio and flows in a generally south-southeast direction to its junction with the Tavignano.

[2] The course of the Corsiglièse follows a fault between the schist mountains and the eastern plain, an unstable area where landslides are possible.

[3] The castrum of Petralerata (Pietr'Ellerat) was in the heart of the Corsiglièse valley, on a peak, and had a defensive character unmatched on the island.

[4] The following streams (ruisseaux) are tributaries of the Corsiglièse: