The Aras Dam (Azerbaijani: Araz su anbarı) (Persian: سَدِّ اَرَس‎‎) is an embankment dam on the Aras River along the border of Iran and Azerbaijan. It is located downstream of Poldasht in West Azerbaijan Province, Iran and Nakhchivan City in Nakhchivan Autonomous Republic, Azerbaijan. The primary purpose of the dam is hydroelectric power production and water supply.