Qastun (Arabic: قسطون), also spelled Kastun or Kustun, is a village in northern Syria, administratively part of the Hama Governorate, located northwest of Hama and 35 kilometers southwest of Idlib. It is situated in the Ghab plain, on the eastern bank of the Orontes River. Nearby localities include al-Ziyarah to the west, Qarqur to the northwest, Farikah to the north, Maaratah to the northeast, al-Muzarah to the southeast and al-Ankawi to the south. According to the Syria Central Bureau of Statistics, Qastun had a population of 6,187 in the 2004 census, making it the largest locality in the al-Ziyarah sub-district (nahiyah).
