Kayabaşı is a village in Mutki District, in Bitlis Province, Türkiye. Kayabaşı lies at 1,540 m above sea level, in the Haçreş Dağları mountains. It has 543 inhabitants. The nearest city is Güroymak, 19.6 km to the east. Among the landmarks around are Nemrut (40 km), Aghperig Monastery (21 km) and Arakelots Monastery (33 km).