Mahmutoğlu is a village in Devrek District, in Zonguldak Province, Türkiye. Mahmutoğlu lies at 695 m above sea level, in the Akçakoca Dağları mountains. It has 601 inhabitants. The nearest city is Devrek, 12.0 km to the north. Among the landmarks around are Köprübaşı Dam (14.4 km).