Ermekoğlu is a village in Devrek District, in Zonguldak Province, Türkiye. Ermekoğlu lies at 503 m above sea level, in the Akçakoca Dağları mountains. It has 167 inhabitants. The nearest city is Devrek, 4.9 km to the east. Among the landmarks around are Heraclea Pontica (41 km) and Kozlu Dam (22 km). Among the natural features are Gökgöl Cave (23 km).