Hodh Ech Chargui (Arabic: ولاية الحوض الشرقي‎) is a large region in eastern Mauritania, with an area of 182,700 sq.km. Its capital is Néma, but the largest town, in Bassiknou Department, is Vassale at the extreme southeast of Mauritania, with 65,927 inhabitants at the 2013 Census. The region borders the Mauritanian regions of Adrar, Tagant and Hodh El Gharbi to the west and Mali to the east and south.