The Louros (Greek: Λούρος) is a river in the Epirus region, in northwestern Greece.

[2] It emerges from the ground in a large spring located immediately north of the village of Vouliasta, in the Ioannina regional unit.

It flows south through a canyon, and then a dam followed by a hydroelectric power station.

The Louros then empties into the marshes at the northern end of the Ambracian Gulf.

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