Yanaqucha (Quechua yana black, very dark, qucha lake, "black lake", Hispanicized spelling Yanacocha) is a lake in Peru located in Huanta District, Huanta Province, Ayacucho Region. It is situated at a height of about , about 0.84 km long and 0.37 km at its widest point. Yanaqucha lies south of the mountain Rasuwillka and northeast of the lake Pampaqucha.