Aras (also known as Araks, Arax, Araxi, Araxes, Araz, or Yeraskh; Armenian: Արաքս or Երասխ, Azerbaijani: Aras or Araz, ارس or آراز, Persian: ارس (Aras), Turkish: Aras, Kurdish: Aras or Erez; Russian: Аракс; Latin: Aboras), is a river located in and along the countries of Turkey, Armenia, Azerbaijan, and Iran. Its total length is 1,072 kilometers (666 mi). Given its length and a basin that covers an area of 102,000 km², it is one of the largest rivers of the Caucasus.
The Aras River rises near Erzurum, Turkey. It meets with the Akhurian River southeast of Digor, flows along the Turkish-Armenian border, and then near a corridor that connects Turkey to Azerbaijan's Nakhchivan exclave. It then flows along the Iranian-Azerbaijan and the Iranian-Armenian border. The river then flows along the border between Iran and the main territory of the Azerbaijan to meet with the Kura River at the village of Sabirabad. It then directly flows into the Caspian Sea. About 101,937 km² of the Araz River basin is located in Azerbaijan.