Karahisar is a neighborhood in Saray District, in Van Province, Türkiye. Karahisar lies in the Vandoğusu Dağları mountains. It has 1,107 inhabitants (2022). The nearest city is Bostaniçi, 63 km to the west. Near the border: Iran, 14 km. Among the landmarks around are Church of the Holy Cross at Soradir (16.6 km), Saint Bartholomew Monastery (27 km) and Hoşap Castle (31 km).