Derebağ is a village in Cide District, in Kastamonu Province, Türkiye. Derebağ lies at 378 m above sea level, in the Küre mountains. It has 254 inhabitants. The nearest city is Kastamonu, 73 km to the southeast. Among the landmarks around are Carambis (9.2 km) and Kerempe Lighthouse (8.8 km).