Girishk or Gereshk is a town in Nahri Saraj District in Helmand province on the Helmand River in Afghanistan, some 120 km (75 mi) northwest of Kandahar, at 817 metres (2,680 ft) altitude. It is the centre of a rich agricultural region with the Kajakai Dam upriver diverting water to the Boghra Irrigation Canal. Girishk was originally built around a fort on the east bank of the river but was later rebuilt on the west.