Çayözü is a village in Daday District, in Kastamonu Province, Türkiye. Çayözü lies at 952 m above sea level, 0.5 km from the Küre mountains. It has 106 inhabitants. The nearest city is Kastamonu, 33 km to the southeast. Among the landmarks around are Mahmut Bey Mosque (19.5 km) and Germeçtepe Dam (19.6 km).