Ciudad Piar is a town in the state of Bolívar, Venezuela, about 77 kilometres (48 mi) south of Ciudad Bolívar, but a longer 120 kilometres (75 mi) by road. The town is in the eastern foothills of Cerro Bolivar, a mountain that is being mined for iron ore, and just inland from the huge Embalse de Guri reservoir. It is the administrative seat for Angostura Municipality. It is primarily a mining town.