Çayan is a village in Sungurlu District, in Çorum Province, Türkiye. Çayan lies at 704 m above sea level, 2.3 km from the Mount Köse (Çorum) mountains. It has 256 inhabitants. The nearest city is Sungurlu, 25 km to the southeast. Among the landmarks around are Hattusa (49 km), Alaca Höyük (39 km) and Ergülü Baba Mosque (6.1 km).