Dereiçi is a village in Gercüş District, in Batman Province, Türkiye. Dereiçi lies at 978 m above sea level, in the Zagros mountains. It has 64 inhabitants. The nearest city is Midyat, 31 km to the southwest. Among the landmarks around are Ilısu Dam (24 km), Mor Gabriel Monastery (34 km) and Boncuklu Tarla (23 km).