The Samur (Azerbaijani: Samurçay; Lezgian: Самурвацl; Russian: Самур; Rutul: Самыр) is a river in Russia's Dagestan Republic, also partially flowing through Azerbaijan and forming part of the Azerbaijan–Russia border.

It rises in the northeastern part of Guton Mount at an elevation of 3,648 m (11,969 ft).

The elevated and midsections of the river from through the territory of Russia, lower sections flow through Azerbaijan, making up the Russian-Azerbaijani border.

[1] The river supplies irrigation water to the Samur-Absheron channel, which follows south to Jeyranbatan reservoir.

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