In Ghar (Arabic: عين غار, lit. Cave spring) is a town and commune, coextensive with the district of In Ghar, in Tamanrasset Province, Algeria. According to the 2008 census it has a population of 11,225, up from 8,059 in 1998, with an annual growth rate of 3.4%. Its postal code is 11210 and its municipal code is 1103.