Otmanlı is a village in Ayancık District, in Sinop Province, Türkiye. Otmanlı lies at 135 m above sea level, in the Küre mountains. It has 358 inhabitants. The nearest city is Sinop, 48 km to the east. Beaches nearby: Ayancık Köyü (8.2 km), Ayancık (8.5 km), Ali Köyü (8.3 km). Among the landmarks around are Erfelek Dam (13.6 km). Among the natural features are Tatlıca Waterfalls (14.5 km).