Ergen is a neighborhood in Siverek District, in Şanlıurfa Province, Türkiye. Ergen lies at 718 m above sea level, in the Malatya Dağları mountains. It has 278 inhabitants. The nearest city is Siverek, 29 km to the southeast. Among the landmarks around are Gerger Castle (6.4 km), Nissibi Bridge (6.4 km) and Arsameia (35 km).