Bastak is a village in Daday District, in Kastamonu Province, Türkiye. Bastak lies at 1,000 m above sea level, in the Küre mountains. It has 87 inhabitants. The nearest city is Kastamonu, 32 km to the east. Among the landmarks around are Mahmut Bey Mosque (22 km), Germeçtepe Dam (18.3 km) and Bezirgan Dam (10.4 km).