Derebaşı is a neighborhood in Çatak District, in Van Province, Türkiye. Derebaşı lies at 2,246 m above sea level, in the İhtiyarşahap Dağı mountains. It has 180 inhabitants. The nearest city is Edremit, 25 km to the north. Among the landmarks around are Cathedral of the Holy Cross (24 km), Çavuştepe (27 km) and Van Fortress (36 km).