Mangallar is a village in Gerede District, in Bolu Province, Türkiye. Mangallar lies at 1,198 m above sea level, 3.0 km from the Bolu Dağları mountains. It has 125 inhabitants. The nearest city is Gerede, 6.2 km to the northwest. Among the landmarks around are Gerede Clock Tower (6.3 km).