Sofu is a village in Ayancık District, in Sinop Province, Türkiye. Sofu lies at 351 m above sea level, in the Küre mountains. It has 138 inhabitants. The nearest city is Boyabat, 49 km to the southeast. Beaches nearby: Ayancık (8.7 km), Ayancık Köyü (9 km), Ali Köyü (11 km). Among the natural features are Tatlıca Waterfalls (18.6 km).