Arpalıseki is a town in Mutki District, in Bitlis Province, Türkiye. Arpalıseki lies in the Haçreş Dağları mountains. It has 952 inhabitants (2022). The nearest city is Güroymak, 21 km to the east. Among the landmarks around are Nemrut (41 km), Aghperig Monastery (19.7 km) and Arakelots Monastery (33 km).