Başalan is a neighborhood in Ayvacık District, in Samsun Province, Türkiye. Başalan lies at 908 m above sea level, in the Canik Dağları mountains. It has 350 inhabitants. The nearest city is Erbaa, 25 km to the south. Among the landmarks around are Hasan Uğurlu Dam (13.2 km), Uluköy Dam (15.5 km) and Suat Uğurlu Dam (25 km).