Kurtlu is a village in Boyabat District, in Sinop Province, Türkiye. Kurtlu lies at 1,249 m above sea level, in the Küre mountains. It has 72 inhabitants. The nearest city is Boyabat, 24 km to the south. Among the landmarks around are Dodurga Dam (18.5 km). Among the natural features are Tatlıca Waterfalls (19.9 km).