Vulcan is a city in Hunedoara county, Romania. With a population of 22,906, it is the second-largest city in the Jiu Valley. It administers two villages, Dealul Babii ("Old Woman's Hill" in Romanian; Hegyvulkán) and Jiu-Paroșeni (Zsilymacesdparoseny). Vulcan is the location of the Vulcan Mine (ro: Mine Vulcan).