Dağdeviren is a village in Gerger District, in Adıyaman Province, Türkiye. Dağdeviren lies at 667 m above sea level, in the Malatya Dağları mountains. It has 525 inhabitants. The nearest city is Kâhta, 39 km to the southwest. Among the landmarks around are Gerger Castle (7.1 km), Arsameia (29 km) and Nissibi Bridge (12.3 km).