The wilaya of Ain Salah () is an Algerian wilaya created in 2019, previously, a delegated wilaya created in 2015. It is in the Algerian Sahara.
The wilaya of Ain Salah is in the Algerian Sahara, its area 131,220 kmò.
It is delimited by:
Ain Salah is rumoured to have been named after Salah Bey who led an expedition that led as far south into the region of Ain Salah after the people of Touat were late in paying taxes. The area was historically ruled by the Deylik of Algiers.
The wilaya of Ain Salah was created on November 26, 2019. Previously, it was a delegated wilaya, created on May 27, 2015, creating administrative districts in certain wilayas and fixing the specific rules related to them, as well as the list of municipalities that are attached to it. Before 2019, it was attached to the Tamanrasset Province.
During the administrative breakdown of 2015, the delegated wilaya of Ain Salah is made up of 2 districts and 3 communes.
According to the general census of population and housing of 2008, all the municipalities of the wilaya of In Salah had a total inhabitants