Kaspiysk (Russian:Каспи́йск; Lak: Ккасппи; Dargin; Lezgian; Avar:Каспийск) is a city in the Republic of Dagestan, Russia, located on the Caspian Sea, 18 kilometers (11mi) southeast of Makhachkala. The 2010 Russian census recorded the city as being the fourth-largest in Dagestan. It is a working-class satellite-city to Makhachkala.