Kırkbulak is a village in Tatvan District, in Bitlis Province, Türkiye. Kırkbulak lies at 1,765 m above sea level, in the İhtiyarşahap Dağı mountains. It has 545 inhabitants. The nearest city is Tatvan, 9.4 km to the north. Among the landmarks around are Nemrut (24 km), Saint Anania monastery (8.4 km) and Saint John Monastery, Por (10.4 km).