Hacıoğlan is a village in Durağan District, in Sinop Province, Türkiye. Hacıoğlan lies at 245 m above sea level, in the Ilgaz mountains. It has 159 inhabitants. The nearest city is Boyabat, 17.1 km to the west. Among the landmarks around are Boyabat Dam (8.2 km), Dodurga Dam (12.8 km) and Boyabat Castle (18.7 km).